FBI response teams are at the scene of last night's mass shooting at a bar in Southern California. Speaking in Thousand Oaks, Assistant Director of the FBI L.A. field office Paul Delacourt emphasized that the evidence they find will be followed wherever it leads. He added that crews are also processing the home and vehicle of suspect Ian Long, a Marine Corps vet. So far, there's no indication on what may have prompted the attack in the crowded Borderline Bar and Grill that killed a dozen people. A member of the Ventura County Sheriff's Department said it's too early to release the names of those who were killed in the attack.