Updated

Police have arrested two Michigan parents they say beat a 73-year-old school crossing guard after he tried to break up a fight between their son and another 7-year-old boy.

Lt. Noel Garcia tells the Lansing State Journal the boys were involved in an altercation at Lyons Elementary School on Wednesday. Garcia says the next morning the parents drove to the area, let out their son and told him to beat the other boy.

Garcia says the couple's 7-year-old punched the other child, knocking him to the ground. When the crossing guard intervened, Garcia says the couple attacked him.

The State Journal says the parents were arrested Friday and are expected to be arraigned Monday on charges of assault or assault and battery and contributing to the delinquency of a minor.