COLTON, Calif. – The parents of a 12-year-old boy who died after playing soccer during a P.E. class on Tuesday are speaking out about his death.

Joel Gallegos told KTLA that his son, Dominick, was playing on the soccer field at Ulysses S. Grant Elementary School when the incident occurred.

Gallegos says that school officials told him that Dominick had fallen and lost consciousness after running into another student.

He was rushed to a nearby hospital, where he was pronounced dead.

The Colton Police Department said that they were sent to the hospital and ruled out any type of assault that happened at the school.

But Gallegos says he spoke with Dominick’s friends, who tell a different story about what happened that day.

The students told Gallegos that Dominick slipped while picking up a soccer ball and another student, who has a reputation for being a bully, stomped on his chest twice.

At that point, they say Dominick lost consciousness and the bell rang.

“I guess the kid thought he was playing around. He started shaking him to wake up,” Gallegos told KTLA. “I don’t know where the teachers were. Someone should have been watching those kids.”

Authorities with the police department say they are still waiting for a report from the county coroner’s office to complete their investigation.