WALNUT CREEK (CBS SF) — Three suspects remain at large after robbing a hospital worker in a parking garage in Walnut Creek late Wednesday night, police said.

Officers responded to a report that an armed robbery had just occurred in a parking garage at the Kaiser Permanente hospital located at 1425 S. Main St. at about 11:35 p.m. Wednesday, police said.

When officers arrived, they found a hospital employee had been robbed. The suspects fled the scene in a silver SUV, possibly a Toyota Highlander, police said.

Officers searched the area but could not find the suspect vehicle.

One suspect is described as a white man in his 20s, average height and build, and was wearing a black jacket with gray sleeves, black pants and white tennis shoes. He was armed with a knife at the time of the robbery, police said.

A second suspect with a similar description as the first suspect was armed with a bat. There was a third suspect, but no description was provided, according to police.

No one was injured in the robbery.

Anyone with information about the incident is asked to call Walnut Creek police at (925) 943-5844.

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