Police broke up a shoving match at a Springfield, Mass., club after rapper 50 Cent and his entourage jumped from the stage during a surprise appearance and scuffled in the audience.

Two people were arrested for disturbing the peace at the Hippodrome club early Saturday morning, Springfield Police Capt. Charles Arpin said.

The crowd of 1,400 people didn't know 50 Cent was there until he took the stage after other acts. About 10 minutes later, someone in the crowd threw water at him from a cup or a bottle, Hippodrome co-owner Michael J. Barrasso said.

The audience was so dense, Barrasso couldn't tell whether there was any fighting beyond pushing. Security guards and police officers pushed the rapper and his entourage back on stage, Barrasso said.

Two men were charged with disturbing the peace.