Philadelphia Police announced the arrests of Salvatore Piccolo and Tracy Biondo on Wednesday. This follows the arrests of Michael Russo and Edward Costello, who were picked up by police last month.
The video of the assault, released by police, shows the EZ Park parking lot at 100 Chestnut Street back on April 30th. It begins showing a group of people who come running into view, stopping in front of the camera.
Within moments, a number of men can be seen assaulting another man.
At one point the victim backs away. That's when one of the suspects, who was wearing a black shirt and light pants, walks up and punches the victim, knocking him out cold.
Police say the victim suffered numerous facial fractures including a broken jaw and a fractured left orbital bone.
All four suspects will be charged with aggravated assault and related offenses.