Wade Michael Page, 40, a former US soldier and a singer with a neo-Nazi punk band, was initially said to have been killed by a police officer who challenged him as he went on shooting spree at the Gurdwara.
"Page died from a self-inflicted gun shot wound to the head. He was first shot by a officer in the stomach that injured him," Special Agent Teresa Carlson, head of the Federal Bureau of Investigation's Milwaukee office, said in a press conference in Oak Creek, Wisconsin.
Carlson said investigators had videotape related to the officer shooting Page. The officer shot Page in the stomach and "subsequent to that wound, it appears that Page died of a self-inflicted gunshot wound to the head."
The FBI is working round the clock on the investigation. "We have not identified anyone else responsible for the shooting," Carlson, also the leader of the investigation, said.
Police said Page acted alone, but they distributed a photo of the man, saying they wanted to identify and question him.
"The photo helped authorities to find the man, who was cooperative and continuing to cooperate," Carlson said.
"We have not clearly defined a motive at this point and the case is still being treated as an act of domestic terrorism," she said. (more) PTI YAS NSA AKJ NSA