The front desk worker at a Union Street hotel got an early wakeup call this morning, when an armed robber stormed the inn.

According to the San Francisco Police Department, the 20-year-old front desk worker at a hotel on the 1500 block of Union Street, which is between Van Ness Avenue and Franklin Street, was "looking at his computer" at 3 a.m. today.

That's when he heard a crash, and looked up to see a suspect described only as "male" "pointing a gun at him demanding money," police say.

The desk worker handed over "all the money in the cash register," and the motel mugger fled in an unknown direction.

According to the SFPD, the desk worker "heard a car leave the front of the hotel but was too scared to see if [the robber] was in it." Police confirm that as of noon Friday, the suspect remains at large.

The Pacific Heights Inn is located at 1555 Union Street, but SFPD declined to name the scene of the crime. When reached by phone, a worker at the Inn declined comment.