SAN RAMON (CBS SF) — Authorities are looking for a man who robbed a Wells Fargo branch at a grocery store in San Ramon on Wednesday afternoon, a police detective said.

The robbery occurred around 3 p.m. inside Nob Hill Foods at 130 Market Place, San Ramon police Detective Michael Pistello said.

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A man went up to a clerk at the bank branch inside the supermarket and presented a demand note in which he claimed to have a firearm, Pistello said.

Although no gun was seen, the clerk surrendered an undisclosed amount of cash to the suspect, who left the building and fled in an unknown direction, Pistello said.

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Pistello described the suspect as a black man in his late 20s who stands at 5 feet 7 inches and weighs 170 pounds.

The man, who was captured on surveillance footage, was wearing dark sunglasses, a white T-shirt and black basketball shorts. Pistello said he also had what appeared to be a white towel around his neck.

Anyone with potential information on the suspect or the robbery is asked to call San Ramon police at (925) 973-2779.

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