Police are seeking three people after, officials say, they beat a man after he disarmed one of them during a knife-point robbery attempt that happened early Tuesday morning on the platform of a SEPTA station in Center City Philadelphia.

According to police, the incident unfolded after about 1:30 a.m. on Tuesday when a 50-year-old man was approached by three people on the westbound platform of a SEPTA station at the intersection of 15th and Market Street.

At that time, police said, one of the three individuals produced a knife and demanded money from the victim.

The man disarmed the knife-wielding attacker, but, officials said, the three individuals proceeded to punch and kick the victim after the weapon was taken.

After the attack, the three escaped the scene by hopping on a westbound SEPTA train, police said.

The victim has been hospitalized following the attack but, officials did not immediately detail the extent of his injuries.

Police are seeking three men in this attack and no arrests have yet been announced.

An investigation, officials said, is ongoing.

The Philadelphia Police Department is asking anyone who may have information on this incident to contact the department’s Central Detective Division at 215-685-3093 or the department’s tip line at 215-686-TIPS (8477.)

This is a breaking news story. It will be updated as new information becomes available.