MARTINEZ (CBS SF) — Police have released images of suspects captured on surveillance footage during a Thursday armed robbery at a Wingstop in Martinez.

Officers initially responded at 10:30 p.m. Thursday to the Wingstop at 1029 Arnold Drive to a report of a possible robbery in progress at the restaurant, police said.

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A witness told police two suspects with knives were confronting the cashier. Police said they received an alarm from the business moments later.

The suspects fled from the scene before officers arrived, police said.

Employees told police the two suspects entered the business, went around the counter and demanded money.

Both suspects were holding knives, and one suspect brandished his knife at the employee and instructed her to open the cash register, police said.

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The suspects fled the restaurant with an undisclosed amount of cash.

Several customers were in the store at the time of the robbery, but there were no reported injuries.

The first suspect is described as a Hispanic man about 20 years old and wearing a black jacket, gray hooded sweatshirt and blue jeans.

The second suspect is described as a Hispanic man about 20 years old and wearing a red jacket, a black beanie and black jeans.

As of about 12:15 p.m. Friday, police officials said there was no additional information on the identity of those suspects.

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Anyone who might be able to identify them or any witness to the incident is asked to call the Martinez Detective Bureau at (925) 372-3400.