Grove City police are investigating a robbery Saturday morning at the Citizens Bank in the borough's downtown, authorities said.

The robber struck about 9 a.m. at the bank's South Broad Street branch. Police said there were no weapons used, and no one was injured. Investigators would not say how much money was taken or if they have any suspects.

A news release also provided no description of the bank robber nor did it indicate if police have surveillance images of the suspect. The FBI is assisting in the investigation, police noted. FBI and bank officials could not immediately be reached for comment.

Anyone with information about the robbery is asked to call police at 724-458-7925, or through the Mercer Center 911 Center.