PHILADELPHIA (CBS) –– Philadelphia Police were out in force throughout the city Friday night amidst concerns of a possible teen”flash mob” situation.

Thursday night, police took a number of unruly teens into custody when a group of teenage girls started to fight inside the H&M clothing store at 16th and Chestnut Streets. Police and store security were nearby and quickly broke up the feuding teens. (see related story)

A number of the teens attempted to make a get away, but police quickly rounded them up and took them into custody. All now face various juvenile charges, including reckless endangerment.

As milder weather sets in, police say they expect to maintain a large presence in that area of Center City.

The same gathering area had been scene of a previous crowd disturbance and a shooting outside one of the stores.

Several “flash mobs” broke out in the summer of 2010 prompting arrests and causing property damage throughout Center City and on South Street.

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