BAGHDAD — An explosives-laden car bomb ripped through a commercial area in Baghdad on Wednesday, killing at least 63 people in an attack that was swiftly claimed by ISIS.
The blast occurred in a crowded outdoor market in the predominantly Shiite district of Sadr City and wounded 85 people, officials said.
The Sunni extremist group — which sees Shiite Muslims as apostates — said it was behind the attack.
The SUV packed with explosives went off near a beauty salon at rush hour. Many of the victims were women — including several brides-to-be who appeared to be getting ready for their weddings, hospital sources told Reuters. Wigs, shoes and children's toys were scattered on the ground outside the building.
Karim Salih, a 45-year-old grocer, told The Associated Press that "a thunderous explosion ... jolted the ground." He suffered no injuries, but two of his workers were wounded.
The market is one of the main four outdoor shopping venues in Sadr City, a sprawling slum that is home to about 2.5 million residents — almost half of Baghdad's population of around 6 million. The open-air markets sell a range of goods, from food to household items, to clothes and other merchandise.
Sadr City is a stronghold of supporters of influential Shiite cleric Muqtada al-Sadr who have been holding protests and sit-ins for months to demand an overhaul of the political system put in place by the U.S. following the overthrow of Saddam Hussein in 2003.
Learn more about the history of the Islamic State
History of the Islamic State
ISIS claims bombing near beauty salon in Baghdad's Sadr City
This handout image provided by the Iraqi Prime Minister office shows Iraq's Prime Minister Nouri al-Maliki holding photographs of a man identified by the Iraqi government as al-Qaida leader in Iraq Abu Omar al-Baghdadi at a news conference on April 19, 2010 in Baghdad, Iraq. Nouri announced the deaths of Abu Ayyub al-Masri along with Abu Omar al-Baghdadi. US Military oficials confirmed U.S. and Iraqi forces killed the two al-Qaida figures in a nighttime rocket attack on a safe house near Tikrit.
(Photo by Iraqi Prime Minister office via Getty Images)
BAGHDAD, IRAQ, FEBRUARY 21: An Iraqi security officer patrols the grounds at the newly opened Baghdad Central Prison in Abu Ghraib on February 21, 2009 in Baghdad, Iraq. The Iraqi Ministry of Justice has renovated and reopened the previously named 'Abu Ghraib' prison and renamed the site to Baghdad Central Prison. According to the Iraqi Ministry of Justice about 400 prisoners were transferred to the prison which can hold up to 3000 inmates. The prison was established in 1970 and it became synonymous with abuse under the U.S. occupation.
(Photo by Wathiq Khuzaie/Getty Images)
An Iraqi soldier guards the site where allegedly top Al-Qaeda leaders in Iraq, Abu Omar al-Baghdadi and Abu Ayyub al-Masri, were killed in a joint Iraqi-US military raid in Al-Dhahiriya in Salaheddin province, 280 kms north of Baghdad, on April 20, 2010. Iraqi Prime Minister Nuri al-Maliki and the US military said on April 19 that Baghdadi and Masri were killed in a raid on a safehouse, which yielded computers filled with emails and messages to bin Laden and his deputy Ayman al-Zawahiri. AFP PHOTO/MAHMUD SALEH (Photo credit should read Mahmud Saleh/AFP/Getty Images)
A shrine for Iraqi Christians who were killed in Al-Qaeda siege is erected at the Sayidat al-Nejat (Our Lady of Salvation) Church in Baghdad on December 23, 2010 as Christmas for Iraq's Christian community will this year be a time of fear and cancelled celebrations instead of rejoicing following renewed threats by Al-Qaeda and the church massacre.
(ALI AL-SAADI/AFP/Getty Images)
An Iraqi woman walks past destroyed shops on the ground floor of a building the day after twin car bombs in the Karrada area of the capital Baghdad on August 1, 2012, in which some 12 people were killed. July was the deadliest month in Iraq in almost two years, with 325 people killed in attacks, and included the deadliest day here since December 2009, official figures released showed.
A lorry drives past a sign welcoming people to the 'Islamic State of Gao' at the entrance of the northern Malian city of Gao, on March 9, 2013. After nine months of occupation by Islamic militants, and subsequent liberation by French troops, Gao is slowly shedding its hardline Islamic way of life, with bars serving beer making a long awaited comeback. AFP PHOTO / JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)
German alleged jihadist Kreshnik B (R) listens to his lawyer Mutlu Guenal (L) as he arrives at the higher regional court in Frankfurt am Main, western Germany, on September 15, 2014 on the opening of his trial on charges of fighting for Islamic State (IS) in Syria, in Germany's first court proceedings involving the militant group. The defendant was arrested in December 2013 at Frankfurt airport in western Germany on his way home from Syria.
(THOMAS KIENZLE/AFP/Getty Images)
An image grab taken from an AFPTV video on September 16, 2014 shows a jihadist from the Islamic State (IS) group standing on the rubble of houses after a Syrian warplane was reportedly shot down by IS militants over the Syrian town of Raqa. The plane crashed into a house in the Euphrates Valley city, the sole provincial capital entirely out of Syrian government control, causing deaths and injuries on the ground.
Smoke rises in the distance behind an Islamic State (IS) group flag and banner after Iraqi Kurdish Peshmerga fighters reportedly captured several villages from IS group jihadists in the district of Daquq, south of the northern Iraqi multi-ethnic city of Kirkuk on September 11, 2015. An Iraqi officer said that the operation was launched in the morning with support from international coalition aircraft, and has succeeded in retaking ten villages from IS.
(MARWAN IBRAHIM/AFP/Getty Images)
Lt. Gen. William C. Mayville Jr., Joint Staff Director of Operations Director of Operations, shows before and after photos as he speaks on the airstrikes in Syria during a briefing at the Pentagon September 23, 2014 in Washington, DC. Mayville briefed the press about US and Arab nation joint airstrikes against Islamic State(IS) group targets in Syria and unilateral airstrikes against an al-Qaeda group in Syria.
(BRENDAN SMIALOWSKI/AFP/Getty Images)
ARLINGTON, VA - SEPTEMBER 23: Lt. Gen. William C. Mayville Jr. speaks about the Syrian bombing campaign September 23, 2014 in Washington, DC. Mayville talked about the U.S. and Arab air strikes in Syria against the jihadist group Islamic State in Iraq and Syria (ISIS). (Photo by Mark Wilson/Getty Images)
FILE - In this Monday, Nov. 24, 2014 file photo, Iraqi army soldiers deploy in front of a court run by the Islamic State group after a military operation to regain control of the town of Sadiyah in Diyala province, 60 miles (95 kilometers) north of Baghdad, Iraq. (AP Photo, File)
Iraqi security forces prepare to attack Islamic State extremist positions in central Tikrit, 130 kilometers (80 miles) north of Baghdad, Iraq, Sunday, March 29, 2015. (AP Photo/Khalid Mohammed)
Black flags used by the Islamic State group are seen over their combat positions in the Rashad Bridge, which connects the provinces of Salah al-Din and Kirkuk, 290 kilometers (180 miles) north of Baghdad, Iraq, Monday, Sept. 29, 2014. (AP Photo/Hadi Mizban)
Syrian Kurdish fighter Delkhwaz Sheikh Ahmad, 22, checks a picture on his mobile showing Islamic State group fighters killed in fighting with Syrian Kurdish fighters, as he prepares to leave for Kobani, Syria, to rejoin the fighting, at his brother's house in Suruc, on the Turkey-Syria border, Friday, Oct. 17, 2014. The father of two is a member of the Peopleâs Protection Units, also known as YPG and is fighting against militants of the Islamic State group in Kobani, Syria. Every few weeks, he takes a couple of days to cross the border into Turkey to visit his family that had evacuated. Kobani, also known as Ayn Arab, and its surrounding areas, has been under assault by extremists of the Islamic State group since mid-September and is being defended by Kurdish fighters. (AP Photo/Lefteris Pitarakis)
FILE - In this Aug. 10, 2014 file photo, an aircraft lands after missions targeting the Islamic State group in Iraq from the deck of the U.S. Navy aircraft carrier USS George H.W. Bush in the Persian Gulf. Combined U.S.-Arab airstrikes at the heart of the Islamic State group's military strongholds in Syria achieved their strategic aim of showing the extremists that their savage attacks will not go unanswered, the top American military officer said Tuesday, Sept. 23, 2014. (AP Photo/Hasan Jamali, File)
In this image made from video broadcast on Egyptian state television on Monday, Feb. 16, 2015, a fighter jet leaves the hangar in preparation to launch airstrikes against Islamic State targets in Libya after the extremist group released a grisly video showing the beheading of several Egyptian Coptic Christians it had held hostage for weeks. (AP Photo/Egyptian State Television via AP video)
In this image released by the Egyptian Presidency in the early hours of Monday, Feb. 16, 2015, President Abdel-Fattah el-Sissi makes a statement after militants in Libya affiliated with the Islamic State group released a grisly video showing the beheading of several Egyptian Coptic Christians it had held hostage for weeks. Egypt said Monday it has launched airstrikes against Islamic State targets in Libya following the release of the video, marking the first time Cairo has publicly acknowledged taking military action in neighboring Libya, where extremist groups seen as a threat to both countries have taken root in recent years. (AP Photo/Egyptian Presidency)
A man is comforted by others as he mourns over Egyptian Coptic Christians who were captured in Libya and killed by militants affiliated with the Islamic State group, outside of the Virgin Mary church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015. Egyptian warplanes struck Islamic State targets in Libya on Monday in swift retribution for the extremists' beheading of a group of Egyptian Christian hostages on a beach, shown in a grisly online video released hours earlier. (AP Photo/Hassan Ammar)
Iraqi security forces participate in a drill as U.S. forces train them in Taji, north of Baghdad, Iraq, Saturday, March 21, 2015. U.S. military officials have said a coordinated military mission to retake Mosul, Iraq's second largest city held by the Islamic State group, will likely begin in April or May and involve up to 25,000 Iraqi troops. But the Americans have cautioned that if the Iraqis are not ready, the offensive could be delayed. Iraqi officials have backed away from setting a timeline. (AP Photo/Karim Kadim)
Iraqi security forces participate in a drill as U.S. forces help train them in Taji, north of Baghdad, Iraq, Saturday, March 21, 2015. U.S. military officials have said a coordinated military mission to retake Mosul, Iraq's second largest city held by the Islamic State group, will likely begin in April or May and involve up to 25,000 Iraqi troops. But the Americans have cautioned that if the Iraqis are not ready, the offensive could be delayed. Iraqi officials have backed away from setting a timeline. (AP Photo/Karim Kadim)
A bombs, seen top left, falls on an Islamic State position in eastern Kobani, during an airstrike by the US led coalition, seen from a hilltop outside Suruc, on the Turkey-Syria border Saturday, Nov. 8, 2014. Kobani, also known as Ayn Arab, and its surrounding areas, has been under assault by extremists of the Islamic State group since mid-September and is being defended by Kurdish fighters. (AP Photo/Vadim Ghirda)
This picture released late Thursday, Aug. 20, 2015, by an Islamic State militant-affiliated website, shows a bulldozer, background, of the Islamic State militants destroying the Saint Eliane Monastery near the town of Qaryatain which IS captured in early August, in Homs province, Syria. A priest and activists say the Islamic State group has demolished an ancient monastery in central Syria. A Christian clergyman told The Associated Press in Damascus that IS militants also wrecked a church inside the monastery that dates back to the first Christian centuries. The priest, who spoke Friday on condition of anonymity for fear of reprisals, said the monastery included an Assyrian Catholic church. (Islamic State militant website via AP)
Mourners carry the coffins of victims of Saturday's Ankara bombing attacks, during a funeral in Istanbul, Monday, Oct. 12, 2015. Turkish investigators are close to identifying one of the suicide bombers in Turkey's deadliest attacks in years, Prime Minister Ahmet Davutoglu said Monday, adding that the Islamic State group was the "Number one priority" of the investigation. (AP Photo/Lefteris Pitarakis)
Armoured police vehicles patrol as they block a road leading to the site of armed clashes with militants in Diyarbakir, southeastern Turkey, Monday, Oct. 26, 2015. Police raided a house used by a suspected cell of the Islamic State group triggering a clash that killed up to seven militants and two policemen, Turkish media reports said. It was not immediately clear if the operation was linked to suicide bombings of a peace rally in the capital Ankara earlier this month that killed 102 people. (AP Photo/Mahmut Bozarslan)
From left, German Chancellor Angela Merkel, French president Francois Hollande and Paris Mayor Anne Hidalgo hold a white rose as they pay their respects to the victims of the attacks of the 13th November on the Place de la Republique prior to a meeting at the Elysee Palace, in Paris, Wednesday, Nov. 25, 2015. Merkel's visit to Paris is part of president Hollande's diplomatic offensive to get the international community to bolster the campaign against the Islamic State militants. (Etienne Laurent, Pool Photo via AP)
FILE - In this April 23, 2013 file photo, a suspected Yemeni al-Qaida militant, center, holds a banner as he stands behind bars during a court hearing in state security court in Sanaa, Yemen. In a competition with the Islamic State group for recruits and prestige across the Middle East, al-Qaida has sought to distinguish itself from its rival's bloodthirstiness, taking an approach that in jihadi circles would be considered pragmatic. (AP Photo/Hani Mohammed, File)
FILE - In this Sunday, March 30, 2014, file photo, Islamic State group militants hold up their flag as they patrol in a commandeered Iraqi military vehicle in Fallujah, 40 miles (65 kilometers) west of Baghdad, Iraq. Abu Bakr al-Baghdadiâs forces swept into Ramadi and Fallujah in Iraqâs Anbar province, which Iraqi security forces had abandoned weeks earlier. That came after security forces killed demonstrators during a Sunni protest, effectively turning the unrest into an uprising.(AP Photo, File)
FILE - In this June 23, 2014, file photo, fighters from the Islamic State group parade in a commandeered Iraqi security forces armored vehicle down a main road at the northern city of Mosul, Iraq. Abu Bakr Al-Baghdadiâs fighters took over Iraq's second-largest city of Mosul in June, 2014, followed by Saddam Hussein's hometown of Tikrit and smaller communities in the Sunni heartland as government forces melt away.(AP Photo/File)
FILE - In this Monday, June 16, 2014 file photo, demonstrators chant pro-Islamic State group slogans as they wave the group's flags in front of the provincial government headquarters in Mosul, 225 miles (360 kilometers) northwest of Baghdad, Iraq. The IS declaration of a "caliphate" in Iraq and Syria inspired a stream of thousands of foreign fighters to join it and earned it pledges of allegiance by individual militants around the region. (AP Photo, File)
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In its online statement, ISIS said it had carried out a suicide attack that targeted a gathering of Shiite militiamen. The AP could not immediately verify the authenticity of the claim but it appeared on a website commonly used by the militants.
ISIS controls significant area in northern and western Iraq, including Iraq's second-largest city of Mosul.
The fight against ISIS has exacerbated a long-running sectarian conflict in Iraq, mostly between the Shiiite majority and the Sunni minority.
In February, ISIS carried out devastating back-to-back market bombings in Sadr City that claimed the lives of at least 73 people.
According to the United Nations, at least 741 Iraqis were killed in April due to ongoing violence. In March, at least 1,119 people were killed and 1,561 wounded.