JACKSONVILLE, Fla. -

A man wearing a red and white Santa Claus hat robbed a bank on Beach Boulevard in St. Nicholas on Monday afternoon, Jacksonville police said.

Police were called to the BBVA Compass bank in the 3700 block of Beach Boulevard just after 1 p.m.

Police said the man, who was also wearing a brown leather jacket, fired a shot with a silver semiautomatic pistol into the ceiling as a warning.

Jacksonville Fire Rescue said a pregnant teller at the bank was taken to a hospital in distress but was said to be doing OK.

Kim Edinger, who works across the hall from the bank, said she saw the robber run right past her as he took off.

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"I was leaving to go to lunch. I usually look over at the bank to wave hi, and I saw a gentleman, black male with a Santa hat on waving a gun," Edinger said. "I heard a shot, saw the smoke and ran back in and asked my co-worker, Julie, I said, 'Call 911. I think the bank's being robbed.'"

Police were looking for the robber, who they said fled in a silver, four-door car. The robber is described as 5 feet 5 inches tall and 140 pounds.

If you have any information about the robber's identity or whereabouts, call the Jacksonville Sheriff's Office at 904-630-0500 or Crime Stoppers at 866-845-TIPS.