Republican presidential candidate Ben Carson is calling for the use of drones to step up surveillance and destroy caves that smugglers use to move people and drugs along the U.S.-Mexico border.
"There are caves that they utilize. Those caves can be eliminated. There are a number of possibilities — that could be one of them," Carson told Jim Acosta Sunday on CNN's "State of the Union," as he spoke from Columbia, South Carolina.
It's not the first time that Carson has suggested using drones to secure the border.
Ben Carson calls for drone strikes to blast 'caves' along US-Mexico border
BALTIMORE, MD - AUGUST 12: (JAPAN OUT) (VIDEO CAPTURE) In this image from video Dr. Ben Carson talks about his life and education August 12, 2001 in Baltimore, Maryland. Dr. Carson was profiled for a CNN program called 'America's Best: Science and Medicine,' for his preeminence in the field of neurosurgery. (Photo by CNN via Getty Images)
Civil Rights activist Rosa Parks, Ben Carson, Ralph Abernathy and Levy Watkins at Johns Hopkins University during a celebration of the birthday of Martin Luther King Jr, Baltimore, Maryland, 1980. (Photo by Afro American Newspapers/Gado/Getty Images)
Dr. Donlin Long, director of neurosurgery, left, and Dr. Ben Carson director of pediatric neurosurgery at Johns Hopkins Hospital in Baltimore, Md.,, holds a brain model of the conjoined twins who separated in a 22-hour surgery, Sept. 7, 1987. (AP Photo/Fred Kraft)
FILE - In this Sept. 16, 2004, file photo, Dr. Ben Carson, then-director of pediatric neurosurgery at Johns Hopkins Children's Center, holds a model of the heads of conjoined twins Tabea and Lea Block of Lemgo, Germany, during a news conference in Baltimore. Carson is the only 2016 candidate for president who has never led a state or company or run for political office, but the retired neurosurgeon maintains that someone who can lead life-or-death operations surely can run the country. (AP Photo/Chris Gardner, File)
Darius Rucker, Candy Carson and Dr. Ben Carson M.D., president and co-founder of Carson Scholars Fund (Photo by Louis Myrie/WireImage)
President Bush places the Presidential Medal of Freedom on Johns Hopkins University's director of pediatric neurosurgery Dr. Ben Carson, as he takes part in a ceremony for the 2008 recipients of the Presidential Medal of Freedom, Thursday, June 19, 2008, in the East Room at the White House in Washington. (AP Photo/Ron Edmonds)
Johns Hopkins Hospital surgeon Dr. Ben Carson, right, signs a book for Delegate William Frank, R-Baltimore County, in Annapolis, Md., Friday, March 8, 2013 after Carson, who is director of pediatric neurosurgery at Johns Hopkins, spoke at a legislative prayer breakfast. Carson said Friday that while people have been urging him to run for president, he doesnât aspire to run for office. (AP Photo/Brian Witte)
SCOTTSDALE, AZ - SEPTEMBER 5: Dr. Ben Carson is interviewed during a live streaming Web-A-Thon with Wake Up America September 5, 2014 at the Westin Kierland Resort in Scottsdale, Arizona. Carson is a retired neurosurgeon who would run in the 2016 Presidential campaign as a conservative for the Tea Party. (Photo by Laura Segall/Getty Images)
SCOTTSDALE, AZ - SEPTEMBER 5: Dr. Ben Carson speaks as the keynote speaker at the Wake Up America gala Event September 5, 2014 at the Westin Kierland Resort in Scottsdale, Arizona. Carson is a retired neurosurgeon who would run in the 2016 Presidential campaign as a conservative for the Tea Party. (Photo by Laura Segall/Getty Images)
SCOTTSDALE, AZ - SEPTEMBER 5: Dr. Ben Carson (C) chats with guests after a live streaming Web-A-Thon with Wake Up America September 5, 2014 at the Westin Kierland Resort in Scottsdale, Arizona. Carson is a retired neurosurgeon who would run in the 2016 Presidential campaign as a conservative for the Tea Party. (Photo by Laura Segall/Getty Images)
Dr. Ben Carson, professor emeritus at Johns Hopkins School of Medicine, speaks at the Conservative Political Action Conference annual meeting in National Harbor, Md., Saturday, March 8, 2014. Saturday marks the third and final day of the annual Conservative Political Action Conference, which brings together prospective presidential candidates, conservative opinion leaders and tea party activists from coast to coast. (AP Photo/Susan Walsh)
US conservative Ben Carson is surrounded by supporters as he waits to be interviewed at the annual Conservative Political Action Conference (CPAC) at National Harbor, Maryland, outside Washington,DC on February 26, 2015. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
NATIONAL HARBOR, MD - FEBRUARY 26: Ben Carson, former neurosurgeon, addresses the 42nd annual Conservative Political Action Conference (CPAC) February 26, 2015 in National Harbor, Maryland. Carson is the author of 'One Nation: What We Can All Do to Save Americas Future' and 'America the Beautiful: Rediscovering What Made This Nation Great'. Conservative activists attended the annual political conference to discuss their agenda. (Photo by Alex Wong/Getty Images)
US conservative Ben Carson addresses the annual Conservative Political Action Conference (CPAC) at National Harbor, Maryland, outside Washington, DC on February 26, 2015. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
NEW YORK, NY - APRIL 08: Ben Carson attends the National Action Network (NAN) national convention at the Sheraton New York Times Square Hotel on April 8, 2015 in New York City. The network, founded by the Rev. Al Sharpton in 1991 is hosting various politicians, organizers and religious leaders to talk about the nation's most pressing issues. The conservative Carson is widely rumored to be considering a GOP presidential run in 2016. (Photo by Andrew Burton/Getty Images)
Ben Carson arrives to speak during the Conservative Political Action Conference (CPAC) in National Harbor, Md., Thursday, Feb. 26, 2015. (AP Photo/Carolyn Kaster)
DETROIT, MI - MAY 4: Republican Dr. Ben Carson, a retired pediatric neurosurgeon, speaks as he officially announces his candidacy for President of the United States at the Music Hall Center for the Performing Arts May 4, 2015 in Detroit, Michigan. Carson was scheduled to travel today to Iowa, but changed his plans when his mother became critically ill. He now will be traveling to Dallas instead to be with his mother Sonya. (Photo by Bill Pugliano/Getty Images)
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Last week after a tour of the area, the retired neurosurgeon said he was open to the idea. But on Sunday he insisted his previous comments were taken out of context because he never meant that he wanted to target immigrants.
"I'm not talking about killing people. No people with drones," he insisted. "Drones can help with the surveillance. In no way did I suggest that drones be used to kill people."
Carson has been climbing in the polls following his performance in the first GOP presidential debate and his recent criticism of Planned Parenthood. Last week's CNN/ORC national poll has him in third place after Donald Trump and former Florida Gov. Jeb Bush.
Watch the video of Carson's interview on CNN below.