Alameda County Sheriff's Office deputies were called to the scene. He reportedly struck one of the deputies, causing the officer's rifle to disable and hit him in the arm as he tried to block the bat, ABC7 reports. According to reports, the officer then pulled out a handgun and fired, along with another deputy.
A relative identified the victim as 60-year-old David Goins. The family claims the deputies did not have to kill him.
Deputies have been called out to the home 19 times since 2011 for a variety of calls, including domestic violence and intoxication. The man's wife was home when the shooting happened.
Get more on this story from our sister station, KGO-TV.