PHILADELPHIA - A bike ride turned violent when police say a man was jumped by several suspects near the Philadelphia Art Museum earlier this month.The 48-year-old victim was riding his bike on the 2500 block of Pennsylvania Avenue on May 4 when a car pulled up beside him.Several suspects emerged, knocked him off his bike, then punched and kicked him until he was unconscious, according to authorities.MORE HEADLINES:They eventually fled with his wallet and keys.Police released surveillance video of the suspects as they ask for the public's help to identify them..