He has identified Daigle as a suspect in the man's death in Moss Bluff. Mancuso said during a news conference that Daigle apparently had either lived in or stayed at the Moss Bluff victim's house.
He says that killing could clarify why an apparently distressed motorist would shoot and kill a trooper who was trying to help him. Daigle has been booked with first-degree murder in the shotgun death of Senior Trooper Steven Vincent.
Col. Mike Edmonson, head of state police, said later that Daigle also told investigators that he'd argued with the man.