October 28, 2002
Posted at: 11:00 a.m. CDT
Updated at: 1:10 p.m. CDT
TUSCON, Ariz. -- Tucson police are searching for explosives, after a shooting that killed four people at the University of Arizona's School of Nursing.
Police Chief Richard Miranda says it appears the attacker killed himself after shooting the three others. Miranda says police found a backpack under the shooter's body, and the bomb squad was called in.
He also says when police searched the shooter's car, a bomb-sniffing dog indicated that an explosive may have been there. The chief says police have learned there had been a bomb threat at the school sometime in recent weeks. Police say officers have been going room to room.
They're not identifying the victims of the shooting, but a university spokeswoman had earlier said two female professors had died. After the shooting began, the nursing school and nearby buildings were evacuated.