they made pipe bombs together. he provided syed with the rifles in the massacre that killed 14 people. he told the fbi that they were hob hobbyists experimenting. fbi divers scouring a lake bed near the site of the san bernardino massacre looking for anything that the shooters may have tossed into the murky water, including a hard drive. kyung lah is "outfront." this is pretty stunning. marquez saying that they were hobbyists that built pipe bombs together? >> reporter: this is a very curious look at this man. he came into the picture because he purchased the two high-powered rifles eventually used in this massacre. also, married to one of farook's relatives. but now this very stunning statement that he and farook built pipe bombs, that even