A man who was shot and killed by a Brisbane resident is not believed to be a home invader as authorities originally believed, a police spokeswoman said Tuesday.

The unidentified man was found dead Monday inside the home in the 300 block of Alvarado Street. He had been shot multiple times, police spokeswoman Michelle Moneda said. The male resident was not injured.

Sergeant Gio Perez said the men did not appear to be related or know each other, and there was no evidence of forced entry at the home or an attempt to steal property.

“It doesn’t look like (the dead man) was there to commit robbery,” Perez said, adding that police were unable to say why he was at the home.

The resident cooperated with police and was interviewed Monday evening, sergeant Gio Perez said. No arrests have been made.

Steve Rubenstein is a San Francisco Chronicle staff writer. Email: srubenstein@sfchronicle.com Twitter: @SteveRubeSF