A "flash mob" attack in Center City has hospitalized at least eight people, including an off-duty police officer, according to multiple reports.
More than 50 teenage boys allegedly attacked people around 16th and Walnut streets around 6 p.m., NBC10 reported.
The off-duty officer tried to intervene and arrest some of the suspects when he was allegedly assaulted, suffering a broken orbital bone and cut to his face, according to the news station.
At least one person has been taken into custody, according to 6ABC.
Philadelphia police did not respond to an immediate request for comment.
This story is developing.