An employee at a Planet Fitness in Pennsylvania was stabbed Thursday afternoon by someone who had previously been banned from the gym, according to police.

The alleged stabbing happened at the Cheltenham Planet Fitness in the Wyncote section of Cheltenham Township, police said. The gym is in the Cedarbrook Plaza in the 1000 block of South Easton Road.

Police said a man was found with multiple stab wounds at the Montgomery County gym shortly after 12:30 p.m. They said the victim was rushed to an area trauma center with “life-threatening injuries.”

According to police, the suspect stabbed the Planet Fitness employee during some type of altercation. Police said the suspect was previously banned from the gym, but did not immediately provide why.

The suspect was arrested shortly after the incident near the gym, police said.

Police are asking any possible witnesses to contact detectives at 215.885.1600 or policetips@cheltenhampa.gov.

The incident remains under investigation by the Cheltenham Police Department.

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