A teen girl with a long, violent rap sheet is being held at Rikers Island on a $500,000 bond for leading a pack of teens in a brutal attack on a 15-year-old girl in a McDonald's restaurant in Brooklyn, New York.

The vicious attack, which was recorded on a video that has since gone viral, occurred at a McDonald's in the Flatbush section of Brooklyn nearby the Erasmus Hall High School on Monday afternoon. In the video, 16-year-old Aniah Ferguson is seen with five other teen girls, pouncing on 15-year-old Ariana Taylor. The attackers ruthlessly punched, kicked and pulled Taylor's hair until she fell limp on the ground.

Dozens of onlookers stood around watching the savagery, while some cheered and others recorded the attack with their cell phones. Eventually, the fight ended once teen boys decided to intervene to prevent the attackers from stomping on the victim's head while she was already on the ground. Three workers at the fast-food chain also called police, reports The New York Post.

Following the incident, police arrested Ferguson on Thursday along with another suspect. Officials also arrested another girl who was trying to flee the country on a plane bound for Jamaica. The 15-year-old suspect was apprehended in Atlanta just moments before she was set to take flight, officials said.

Cops are still searching for two more suspects.

"It appears they have been lying low," a police source said of the remaining suspects. "We couldn't find them at home or school."

One of the two girls being held was identified as 17-year-old Tilani Marshall of Midwood, but the other 15-year-old has not been named. Both teens were taken into custody at the 70th Precinct and were arraigned on robbery and gang assault charges.

After being picked up from her family's Prospect-Lefferts Gardens home early Thursday, Ferguson told investigators she attacked the victim because Taylor had "done something to a very close friend," a source said.

Ferguson could face up to 25 years in prison on felony gang assault and robbery charges for stealing Taylor's bag. The troubled teen also has a slew of priors for felony assault, which includes stabbing her 18-year-old brother and physically attacking her 64-year-old grandmother, who has an active order of protection against her, reports The New York Daily News.