The streets of Philadelphia descended into chaos on Sunday after the city's Eagles won their first Super Bowl title.
Celebrations started immediately after the upset 41-33 win over the New England Patriots and turned increasingly uncontrollable as the night progressed.
Local Philadelphia media reported that fires were started on the streets and cars were rolled over.
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Philadelphia police had covered hundreds of street poles with hydraulic fluid to prevent people climbing them in celebration.
But revelers decided to climb buildings instead, with parts of the Ritz-Carlton hotel reportedly collapsed under the weight of fans.
The Philadelphia Inquirer reported several incidents of "fighting, trashing (and) smashed windows".
"After the windows of the Broad Street Macy's were smashed, people are carrying mannequins down the street," it said.
One Philadelphia Inquirer reporter tweeted that looters had taken over a gas station "yelling everything is free".
"Damn it, Philly we better than this," she said.
Authorities moved in later in the evening and Philadelphia remained blanketed with a heavy police presence overnight.
