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.

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.

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Four people were arrested at the Philadelphia Mills Mall Tuesday night, after a second night of violence at the shopping center

Around 200 people, mostly teens, converged on the mall around 6.45pm on Tuesday. Above, one person is led from the scene in handcuffs

On the second night of chaos, police were waiting for the teens at the mall and were able to keep most of them - who largely arrived by city bus - from entering the center around 6.45pm.

But 30 or so did manage to get past security forces and that group started a ruckus in the food court.

'They went to the food court area and that's when they started running around, yelling and screaming and acting disorderly,' Philadelphia Police Chief Inspector Scott Small told WPVI.

A witness inside the mall captured this video, showing a cop or security officer chasing a trouble-maker through the mall

Three of the people who were arrested were teen boys - two 15-year-olds and a 14-year-old. The age and gender of the fourth suspect has not been released

Anthony Clark, a vendor inside the mall, said the kids were 'pelting cops with fountain sodas and all kids of trash'

Anthony Clark, a vendor inside the mall, said the kids were 'pelting cops with fountain sodas and all kids of trash'.

Another witness told Fox 29 that 'multiple fights' broke out, including both males and females.

'Phones being thrown, I seen them running through security, security had no chance,' the witness said. '[The police] were trying to keep them out of the mall, they just ran through.'

During the chaos, many of the shops in the mall went into lockdown mode, lowering their gates to protect shoppers.

Inspector Small says that the police were able to break up the crowds pretty fast, but not before one of the trouble-makers tried to punch an officer.

Inspector Small says that the police were able to break up the crowds pretty fast, but not before one of the trouble-makers tried to punch an officer

Some of the trouble-makers are seen fleeing the scene on bicycles Tuesday evening

That person - who has not been identified by age or gender - was taken into custody, along with three male teens (two 15-year-olds and one 14-year-old). Luckily, no officers were actually injured.

Those who were arrested face charges of disorderly conduct and failure to disperse, but authorities aren't ruling out the possibility of felony counts of inciting a riot. The person who tried to hit an officer will also face felony charges connected to that.

Additional officers will be stationed at the mall for the rest of the week.

'So it wouldn't make any sense for these juveniles to return because they're going to be turned away, they're going to be dispersed immediately,' Small said.

It's still unclear if the two nights of violence at Philadelphia Mills is in anyway connected to the other disturbances on Monday at other American malls.

Hundreds of people (left) were in the vicinity of a food court brawl (right) in the Fox Valley Mall in Aurora, Illinois on Monday. Seven juveniles were arrested in the fight. It's unclear if the two nights of violence at the Philadelphia Mills Mall were connected to these other incidents on Monday

Teens were tackled by cops - unfairly according to one witness, who filmed the arrests - at the Aurora Mall in Colorado. There were several large fights 'involving juveniles', cops said

Fights were reported across the country, with instances at malls in Colorado, Illinois, Tennessee, Ohio, Connecticut and New York on Monday. Many saw fights taking place in food courts, and incorrect reports of gunfire. Many involved teens or juveniles.

One incident, at The Mills in Jersey Gardens, New Jersey, saw 48,000 people fleeing after a fight culminated in a loud bang and a person shouting 'shots fired' at around 5pm.