Authorities Comb San Bernardino Lake For Clues Into Couple's Terrorist Attack

Authorities reportedly searched a lake in San Bernardino, California this week, hoping to learn more about the motives that inspired two Islamic extremists to carry out a mass shooting in the California city that left 14 dead.

The FBI and local authorities were reportedly spotted gleaning Seccombe Lake in San Bernardino hoping to find a computer hard drive that may have been dumped by the couple who carried out the December 2 attack.

Authorities reportedly received a tip that the couple, Syed Rizwan Farook and Tashfeen Malik, had dumped a computer hard drive in the lake on the same day as they carried out the attack.

As officials continue their investigation into the couple's motives and electronic history, lawmakers have been questioning why the couple was allowed entry into the U.S. when they had a history of radical activity online.

"Everyone's asking the same questions about how it is that law enforcement didn't know, or intelligence officials didn't know — that they could have flown under the radar and nothing gave an indication that they were a threat," Rep. Jim Langevin, (D-Rhode Island), told the Los Angeles Times of the attack.

Officials have indicated that the day prior to the deadly attack, Malik reportedly posted a comment to Facebook that was flagged and removed for "promoting terrorism/glorifying violence."

"There was a post that went up around 11aPT on the account Wednesday that violated the company's community standards (those standards prohibit people using Facebook to promote terrorism or celebrate/glorify violence)," an anonymous Facebook employee recently told CNN. "It was taken down Thursday. He said he couldn't go into details about the nature of the post other than it violated standards (pointed to their standards prohibiting terrorism). The official said Facebook is cooperating with law enforcement."