NEW: @TheJusticeDept AG William Barr touts "significant developments" into deadly December shooting at @NASPCOLA that killed 3 and wounded 8
NEW: Information found on phones of shooter, Saudi Air Force Lt. Mohammed Saeed Alshamrani, ties him directly to #AQAP per Atty Gen William Barr
@FBI Dir. Chritopher Wray: Info on the phones show @NASPCOLA shooting "brutal culmination of years of planning"
Alshamrani "talked w/#AQAP about his plans and tactics" in the months leading up to the shooting, @FBI's Wray "He was helping the organization make the most he could out of his killings"
