(CBS/AP) MILWAUKEE - The FBI says investigators have determined that Wade Michael Page died of a self-inflicted gunshot wound to the head after he was shot by police during his rampage at a Sikh Temple in Oak Creek, Wis. on Sunday.
Authorities previously said an officer had fired the fatal shot.
FBI Special Agent in Charge Teresa Carlson said at a news conference Wednesday Page's motive remains unknown in the shootings that killed six worshippers and wounded three other people. Authorities still consider Page as the lone suspect.
Carlson says federal officials had not opened any investigation into Page before Sunday's shooting. She says investigators are interviewing dozens of people who knew him.