> reporter: as school day ended on tay 19 year-old nicholas cruz fired a hail of bullets, intot marjory n douglas high school in park land, high school.t hos can be n the lap top computer in the classroom. >> he wenp, banging and shooting in the classroom. i think abou classroom, i saw blood every where. >> reporter: cr w believed to be an ar15 semiautomatic rifle law shortly after entering the school he pulled the fire alarm. >> he got us out of o and in a large group of unprotect,ic up off campus without incident, last night investigators searched the home year-old was staying, a lawyer representing the family that related to them, they took him in about three months ago after his passed away. maybe he was a littleo died depressed because of the mother situation, he see normal. they are shock. they cannot believe this. he had some problems at the but nobody saw this coming. >> reporter: law enforcement confirms that cru marjory stone douglas high school for quote disciplinary reasons. one classmate wasinessis said so cruz as he was walking out >> he was trouble in middle school, so i kind of jo