A man wearing full-body armor fatally shot four people, including a mother and the 3-month-old baby she was cradling, a Florida sheriff said Sunday.

The shooter, a former Marine, then engaged in a gunfight with police and deputies before he was wounded and surrendered. An 11-year-old girl who was shot seven times survived, writes NPR.

Polk County Sheriff Grady Judd said during a press conference that even after 33-year-old Bryan Riley was arrested Sunday morning, he was so aggressive that he tried to wrestle a gun from police as he lay on his hospital gurney.

Investigators said preliminary evidence shows 40-year-old Justice Gleason just happened to be an unlucky stranger out mowing his lawn Saturday night when Riley drove by his home in Lakeland, about 30 miles east of Tampa, saying God told him to stop because Gleason’s daughter was going to commit suicide.