ALAMEDA – People were having dinner at a restaurant when a masked man armed with a firearm demanded cash from the business on Tuesday.

No one was hurt during the attempted robbery of Monkey Thai, 1930 Main St., which is near Alameda Point and a few blocks from College of Alameda and Webster Street.

There was no loss, police said.

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Customers were having dinner when the suspect entered about 7:25 p.m., Alameda police Lt. Hoshmand Durani said.

Witnesses described the suspect as a white man between 20 and 25 years old who stands between 5 feet 7 inches and 5 feet 11 inches tall. He was wearing a green hooded sweatshirt, a black mask and blue jeans.

Durani said the man fled on foot and that it was unknown if a vehicle was involved in the attempted robbery.

Anyone with information can call Alameda police at 510-337-8340.