It happened on Route 30 (East Absecon Boulevard) in Absecon, N.J.
Police say a maintenance worker at the Comfort Inn in the 500 block of that road walked into an 8th floor boiler room and encountered a man who did not belong there.
The two exchanged words. The worker said the man pulled out a black revolver then left.
Police shut down Route 30 in both directions and searched the hotel but did not find the man.
They reopened the boulevard and searched the hotel again. They never found the suspect or the weapon.
Police are looking for a white or light-complected Hispanic man about 5'8" tall.
Anyone with information on the suspect or the case is asked to call Absecon Police.