(DAILYMAIL) — Four people were arrested after a second night of violence at a Pennsylvania mall that was organized on social media.
Authorities say about 200 teens converged on the Philadelphia Mills Mall Tuesday evening to start a disturbance, after planning the ruckus on Snapchat.
Police were prepared for the flash mob though, after battling a smaller crowd of teens who came to start a similar disturbance the previous night.
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In fact, the Philadelphia Mills Mall was just one of dozens of shopping centers across the nation that were victim to such flash mobs on Monday.