A man was attacked and robbed after he refused to share his beer in San Francisco's Excelsior neighborhood on Sunday evening, police said.

The incident was reported at about 5 p.m. in the 1000 block of Brazil Avenue.

The victim, a 45-year-old man, was outside drinking a beer when the suspect approached him and asked for a sip, according to police.

When the victim said no, the suspect grabbed the bottle of beer and hit the victim over the back of the head with it, police said.

The suspect then took the victim's phone and fled. The victim was taken to a hospital to be treated for cuts to the back of his head.

Police said on Monday that the suspect, a 28-year-old man, had not been arrested.

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