PHILADELPHIA (CBS) – Police say five teenagers are in custody after a flash mob gathered at Liberty Place in Center City Wednesday evening.

It all started about 5:30 in the area of 15th and Chestnut Streets. Central Detectives received a radio call of a large flash mob in the street. Arriving officers found 30-to-40 teens in the street weaving in and out of traffic, and pushing pedestrians on the sidewalk.

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The group of teens then entered Liberty Place, knocking over promotion signs outside of stores, and then went into the food court and began flipping tables. Police say all the activity inside was caught on surveillance video.

The flash mob then exited Liberty Place on the Walnut Street side, where some of them were apprehended by police.

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The teens in custody are charged with rioting, conspiracy, criminal mischief, reckless endangerment, and disorderly conduct.

All of the defendants deny knowing the others involved. Police say all five teens attend different high schools in Philadelphia.

Reported by Kim Glovas, KYW Newsradio

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