Photo shows San Bernardino suspects returning to the US together for the first time

On July 27, 2014, Syed Rizwan Farook returned to the U.S. after a brief trip to Saudi Arabia. Traveling with him was Tashfeen Malik, his future wife and the woman who would later join him in killing 14 people at a holiday party in San Bernardino, California.

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A camera at Chicago O'Hare International Airport captured the couple as they walked through customs; ABC News published the photo on Monday, and it seems to be the most recent photo of the suspects that has been released so far.

Other new details about the suspects and the investigation into the shooting were released over the weekend. On Saturday, the FBI raided the home of Enrique Marquez Jr., one of Farook's friends. Attorney General Loretta Lynch said on Meet the Press that investigators have conducted more than 300 interviews, but that no one should expect all of the answers to what happened immediately. She called the investigation "wide-ranging" and "very complex," adding that it's a "marathon and not a sprint."

Many of the recent questions have focused on Malik, who was raised in Saudi Arabia but returned to her native Pakistan to go to pharmacy school. "The wild card here is the wife Malik," Representative Mike McCaul, chairman of the House Homeland Security Committee, said on Fox News Sunday.According to the New York Times, the area around where Malik went to school was notorious for radicalization; the school installed surveillance cameras in dorms, just in case radical groups decided to meet there. However, none of Malik's professors noted anything odd about her behavior -- she was remembered as a diligent, if very conservative, student.

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There are also questions about how the couple managed to buy all of those weapons and ammunition, McCaul added. "We are looking at the terrorist financing aspect to this case. I believe on his salary, he was not able to buy this on his own." According to Reuters, officials believe, given the number of weapons stockpiled at the couple's house, that the suspects were planning multiple attacks.

Farook's family has continued to offer its thoughts on his role in the massacre. His sister, Saira Khan, told Good Morning America, "I feel like he had a double life."

Farook's father, also named Syed, told Italian newspaper La Stampa, according to AFP, that his son agreed with ISIS's ideology and that he "was obsessed by Israel. ... I always used to say to him, be calm, patience, in two years' time Israel will no longer exist. Geopolitics are changing: Russia, China, America too, nobody wants Jews over there. They will put them all in Ukraine. Why bother fighting them? We did that before, and we lost."

County employees in San Bernardino will head back to work today. Those who worked with Farook at the Public Health Department -- the office that had its holiday party end in such a terrifying manner last week — will wait another week before trying to return to a normal schedule again. When they do, employees will notice a far bigger security presence around office buildings all throughout the country.

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