Charlie Johnson, 39, was arrested by Oakland police on Oct. 4.
"This was a collaborative effort between media, citizens and neighboring police agencies," San Leandro Police Lt. Randall Brandt said.
San Leandro police released video of the alleged assault that shows a man punching the 51-year-old Safeway store manager after a brief exchange.
The manager sustained serious injuries that required he be transported to the hospital.
