SHARON, Mass. (AP) – A 4-year-old boy survived a car crash on Sunday morning that killed his parents, state police said.

Juanita Medina, 27, of Randolph, lost control of the Toyota Corolla on Interstate 95 north in Sharon at about 5:30 a.m.. The car veered from the left lane to the right breakdown lane, where it began to roll. As it rolled, the roof of the car struck a tree, police said.

“We believe that speed was a factor,” Trooper Thomas R. Ryan said.

Oswald Dominguez, 29, of Brockton, was pronounced dead at the scene. Medina, who was partially ejected, was pronounced dead at Norwood Hospital, police said. Police at the scene identified the victims as the boy’s parents, according to broadcast reports.

The boy suffered only minor injuries, police said. There was no indication alcohol was involved.