WATERBORO — A 16-year-old girl who was caught on video assaulting a fellow student at Massabesic High School may face criminal charges for the attack, York County Sheriff William King said Thursday.

In a statement released Thursday, King said the victim “suffered bumps and bruises and was examined by the school nurse,” but she did not require hospitalization.

“The victim has obtained a protection order prohibiting the assailant from contacting her or being near her except for incidental contact while they are both at school,” King said. “Based on school district policy the school has taken appropriate action.”

The sheriff said school resource officer Jason Solomon is investigating the incident, which “could result in criminal charges.”

Neither the victim nor the perpetrator of the attack have been publicly identified.

Portland television station CBS 13, broke the news of the assault Wednesday after it obtained video of the attack, apparently recorded by a fellow student. In the video, one girl can be seen pinning down another and repeatedly punching her in the head.

The victim’s mother, who told CBS 13 she did not want to be identified, said she believed the brutal attack was planned. The woman described her daughter as weighing 98 pounds and said the video was “sickening.”

“It was planned out. She knew when would be a good time to attack my daughter because she knew there would be no teachers around,” the woman told CBS 13. “They wanted it recorded so they could put it up on social media.”

John Davis — the superintendent of Regional School Unit 57, which includes Massabesic High School — told the television station the district’s privacy policies prevented him from saying publicly what punishment the attacker or video recorder may be facing from the school. But he said he wants parents to know the district is taking the incident seriously.

“I can’t tell you about this particular incident, but I can assure you that when there is an incident — where there’s been a fight or … drug possession, truancy or a number of issues — there are consequences,” Davis said.

Jessica Pettingill, who said she is the victim’s aunt, told CBS 13 more volunteers are needed in the schools to help cover where teachers and staff members have blind spots.

“We need more parents to know what’s happening with their kids,” she said. “We need more parents to help the teachers, the teachers can’t do it on their own. I know it’s not the school’s fault. It’s the community, we’re all responsible.”