A gunman robbed a parking lot attendant on the Buffalo Niagara Medical Campus, Buffalo police said Saturday.

The holdup occurred about 8:30 p.m. Friday while the attendant was in a parking lot booth at High and Ellicott streets. The man displayed a silver handgun with a long barrel, reached into the booth and took $147 from the register, according to police.

The gunman also took the attendant’s cellphone, before running off south on Ellicott. The robber was described as a 5-foot-9, black male, with medium complexion, in his 20s, wearing a gray hoodie, blue jeans, dark boots and leather gloves.