A pack of roving teens robbed and beat five people following a concert in New Jersey's largest city, authorities say.

The wave of violence broke out as nearly 20,000 people left Newark's Prudential Center after Saturday's Red Hot Chili Peppers show.

Three teenagers and two adults were targeted, including a 23-year-old Pennsylvania man who suffered a fractured eye socket.

Newark Police Director Samuel DeMaio tells The Star-Ledger of Newark the suspects appeared to be a band of 10 or 15 "thugs." No arrests have been made.

Prudential Center officials say they wish the victims a speedy recovery, and praised the work of the Newark Police Department

DeMaio tells the newspaper 23 officers were assigned on Saturday, despite the city ordering a recent reduction.

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