A 14-year-old student at South Whidbey Middle / High School is facing a felony charge for allegedly assaulting another student on a school bus Oct. 10, according to court documents.

The parents of the victim, who suffered a concussion, reported that assault to the Island County Sheriff’s Office after returning home from being out of the area a week later and talking to a school administrator about the assault.

The deputy’s report states that the victim, a 12-year-old boy, was talking to a friend on the bus when the 14-year-old girl put him in a chokehold and punched him several times in the face, head and upper body.

Photos of the boy after the assault showed bruising and swelling on his face, as well as red marks and bruising on his neck.

The deputy reviewed the video from the bus and noted that the attack appeared to be unprovoked. The boy struggled as he was in the chokehold and the girl delivers “three powerful strikes” to the child’s face, the deputy wrote.

Other students on the bus were eventually able to separate the two students.

The boy told the deputy that he had “a little” trouble breathing during the assault. His parents said he had suffered headaches after the assault. The deputy advised them to take the boy to get medical care; a doctor confirmed he had suffered a concussion.

The deputy spoke with the girl, who admitted to assaulting the boy but said she was protecting another student, the report states. She was suspended from school.

The deputy arrested her on suspicion of second-degree assault. An assault becomes a felony if the victim’s ability to breath was obstructed.