Officials Hunt for Clues in San Bernardino Terror Attack

FBI divers recover items from bottom of a lake as more victims of the shooting are laid to rest.
2:17 | 12/13/15

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Transcript for Officials Hunt for Clues in San Bernardino Terror Attack
is reporting tonight, the desperate hunt for clues in that terror attack in San Bernardino. FBI divers recovering objects from the bottom of this lake. No word yet on whether they are linked to the husband and wife killers. And a childhood friend of one of the shooters being questioned again today, police saying he bought their most deadly weapons. All of this as more victims are are laid to rest. ABC's kayna Whitworth reporting in from San Bernardino tonight. Reporter: For the third day, searchers combing through this muddy lake in San Bernardino. The FBI telling ABC news, divers have pulled items from the water and are now analyzing them for any connection to Syed farook and tashfeen malik. Investigators are still looking for the couple's missing hard drive. Tonight, farook's childhood friend, Enrique Marquez, who bought the two rifles used in the attack, now in his sixth day of questioning by the FBI. He is probably sitting somewhere, what I would describe as FBI hotel. So, he continues to talk and describe whatever he knows about Syed and the female that was, you know, part of the attack. Reporter: Marquez hasn't been charged with a crime, and says he knew nothing about the plans for the San Bernardino attack. But what he has told investigators is that farook had planned an attack in 2012, but got cold feet. Nick Rodriguez, who knew Marquez from a local bar, said he remembered one chat back in 2013, but shrugged it off as drunk banter. He would just talk about how there are so many sleeper cells and when it's going to happen, it's going to be big. Reporter: Rodriguez believes Marquez is partly responsible, no matter what he knew about the attack ten days ago. He turned his back on America. Like I said, innocent people are dead. Families broken up this holiday. People are missing. There's presents underneath the tree that are never going to be opened. Reporter: Today, those families saying good-bye to three victims, including Shannon Johnson, who saved the life of his coworker, Denise perazza, by shielding her from the bullets. His last words to her? "I got you." He's always about taking care of those who can't take care of themselves. Reporter: Shannon's brother described him as fearless today. He was certainly that in the face of terror. And now his name is inscribed on this wall of remembrance, along with the 13 other victims. Cecilia?

This transcript has been automatically generated and may not be 100% accurate.

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