PHILADELPHIA (WPVI) -- Philadelphia police are looking for person who robbed a Planet Fitness gym.
At this time, police are not sure if the suspect is a man or woman.
The robbery happened on Thursday at the facility in the 6200 block of Ridge Avenue.
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It was around 2:45 a.m. when, police say, the suspect walked inside with a handgun, went behind the counter, and said "You know what time it is."
The 19-year-old man who was working turned to see the robber, armed with a gun.
The worker handed over the money from the register, then the suspect fled in an unknown direction.
That worker was not hurt.
Anyone with information is asked to contact Philadelphia Police at 215.686.TIPS (8477) or text a tip to PPD TIP or 773847.