Six teen girls from Chester, Pennsylvania were arrested and charged for beating up a mentally challenged 48-year-old woman, and posting the video on Facebook.

The teen girls who assaulted their neighbor “just for fun” were charged with aggravated assault, reckless endangerment, burglary and harassment.

The woman who simply tried to offer the girls some gum or candy was repaid by getting severely beaten up by four of the girls. The attack happened on September 25th outside the woman’s house and continued into her apartment.

“It appears just for fun,” Chester police Detective James Nolan said. “There hasn’t been a discernible explanation as to why.”

The victim didn’t go to authorities, but sought medical attention for her injuries. In fact, police only learned about the assault after a local parent saw the brutal video posting on Facebook.

“She is different,” explained one of her neighbors to Daily Times. “She walks around barefoot all the time, but people try to help her out. There is no excuse for this. I live here and I’m embarrassed.”

According to the Delco Daily Times, four the girls were arraigned as adults on Friday. There were: Anye Dennis, Rahmiyah Henderson and Janyea Bell, all 16, and Jamiah Davis, 15.

Two other girls, identified as Jasmir Womack, 17 and Takia Edwards, 19 were also involved in the incident and are also in custody.

Watch the horrific video below.