Police and U.S. Postal Service officials are searching for a man who robbed a post office in East Pittsburgh at gunpoint late Friday, according to KDKA-TV.

The man was wearing a mask and gray hooded sweatshirt. Postal Inspector J. Bruce Hammerle told KDKA-TV that “the clerk was not injured, fortunately. However, [he] is shaken up emotionally.”

No shots were fired in the robbery.

KDKA reported that a surveillance camera outside the Lanigan Funeral Home on Linden Avenue, across the street from the post office, captured video of the suspect casually walking up to the post office, and leaving a few moments later.