Two California women were arrested for allegedly going onto a school’s campus and assaulting two teenage girls, including one who the women say had bullied their son, police said Tuesday.

The 12-year-old boy’s mother, stepmother and other relatives drove to the Cooper Academny in Fresno, Calif., rushed into the cafeteria filled with nearly 100 people for an after-school activity and confronted the two girls aged 12 and 13, Fresno police Lt. Joe Gomez said.

A 15-year-old daughter of one of the women started to fight with one girl during the confrontation. The girl later complained of pain in her head and arm, police said.

The women, ages 29 and 33, and the 15-year-old girl were later arrested on suspicion of felony conspiracy and misdemeanor cruelty to a child.

The boy's mother said Tuesday that she was interviewed by a police detective who told her that she would not be charged. The Associated Press is not naming the mother because her son is the victim of alleged bullying.

The mother said that before the March 17 incident, she repeatedly complained to the school that the girls verbally bullied her son for two months and it did not end. The mother said she got a call from her son, hiding in the bathroom saying he was being bullied again. The mother said that’s what led to the confrontation.

She said that there was some pushing and shoving inside the cafeteria, but she and the other woman were not directly involved. She said a video recording of the incident supports her story.

Gomez said the case remains under investigation will be sent to prosecutors who will decide what charges are filed.

Jed Chernabaeff, a Fresno Unified School District spokesman, said that the school had an open investigation into the alleged bullying at the time of the incident. He said the school was following its protocol by interviewing each of the involved students and witnesses to resolve the bullying.

The Associated Press contributed to this report