NIAGARA FALLS – Victims in three separate robberies told police that a man on a bicycle stole their cell phones Monday night.

A 15-year-old boy said that just before 7 p.m. in the 1500 block of Pine Avenue, a man on a mountain bike demanded his cell phone. The teenager said he refused, fighting with the suspect. The victim said the suspect displayed what appeared to be a semi-automatic pistol, then grabbed the cell phone and rode off.

A 21-year-old victim said he was approached just after 7 p.m. in the 2000 block of Pine Avenue by a man on a mountain bike who asked to use his cell phone. The victim said when he took out the phone the man punched him in the face and grabbed the phone. The victim said he grabbed the man’s hood and fought with him, but was punched a number of times and then let go of the hood.

Police also reported that a third similar robbery took place Monday evening, but they released no details.