A contract security guard in front of Independence Hall reported hearing a female screaming on Chestnut Street around 2:30 a.m. on January 14th. Responding rangers found a man in his early 20s lying on the sidewalk in front of the Second Bank of the United States, evidently the victim of an assault. He had no pulse and was unresponsive; the rangers immediately began CPR and called for EMS and police assistance. An AED was employed, but indicated that a shock was not advised. The man was taken to Jefferson Hospital, where he remained on life support until members of his family could arrive. He was removed from life support that evening and succumbed to his injuries. Witnesses said that the man and two women with him were attempting to hale a taxi after leaving a local bar, and that the man, who was reportedly intoxicated, became agitated at a taxi driver who declined to stop for them and began shouting obscenities at the driver. A car right behind the taxi then pulled up next to him and four men jumped out and assaulted the man. They then fled down Chestnut Street. None of the assailants were known to the two women who were accompanying the victim. The suspects have not yet been identified, but footage from park surveillance cameras is being reviewed. Investigators are hopeful that the suspects will be identified after the footage is released to local media outlets. The National Park Service is assisting Philadelphia PD with the investigation. The victim has been identified as Kevin Kless, 23, a resident of Philadelphia.