We don’t know why a parent and four other teens followed a high school student into a locker room and beat him up Friday, but the school’s principal is vowing that arrests are on the way.

Update (August 28): Contrary to initial reports that five adults attacked the student, revised reports now say it was "A parent and four teenagers, ages 16 to 19" who committed the attack, according to KTVU. That report notes that Dublin PD investigators say that the victim "was confronted by a Dulbin High School parent. The victim retreated into the boys' locker room, followed by four unknown subjects and the Dublin High School parent. The four unknown subjects who were wearing hoodies, reportedly assaulted the victim."

"We know that none of [the four teens] were students at Dublin High," Dublin Unified School District superintendent Chris Funk told KTVU. "We were able to use our surveillance cameras to work with Dublin PD to help identify who they were."

Original story (August 27): It’s been a rather terrible start to the school year at Dublin High School over in the East Bay. On Monday of this week, the high school campus was placed on lockdown over police calls regarding a reported fight and weapon on campus, which turned out to be a false alarm. But we’re now learning through the Bay Area News Group that there had been a fight on campus last Friday, in which five adults reportedly attacked a teen student.

We do not know the condition of the youth who was attacked last week, but the News Group reports that the five adults “followed a teen boy into a campus locker room” where the assault occurred. It is confirmed that police and paramedics were on the scene, and per the News Group, the school’s principal Principal Maureen Byrne says that police have identified some suspects, and that arrests are forthcoming.

“We are outraged that this happened on our campus,” Byrne said in a message to parents. “School must be a place where all feel safe and supportive. We are working with the police to address this to the full extent of the law.”

Dublin Police confirmed an investigation into the incident, but said they are not yet ready to make a public statement. The department also reiterated Monday that no arrests had been made, and they have not determined a motive for the assault.

The fight was apparently broken up by a football coach and several football players who were also inside the locker room. So there seems to be no shortage of witnesses here, and obviously, parents will expect more information to be forthcoming.

Dublin High School is not to be confused with the newer Emerald High School, the city's second high school, which just opened for classes this school year. Dublin, which was the fastest-growing city in California in the 2010s, saw enrollment in its school district rise 92% in the last decade, necessitating the need for a second high school.

Dublin Unified School District currently serves around 12,900 students.

Related: Retired Boxer Gets Misdemeanor Citation In Alleged Attack on Filipino Teen Outside Gino & Carlo Bar In North Beach [SFist]

Image: Dublin High School via Facebook