When police arrived at the school, they found Rivera next to the burning car authorities said he had doused with petrol. He had burns to his body and a self-inflicted wound and was taken to a hospital.
The boy’s body was found in the vehicle, but it was not yet known if he died in the fire or before it was set. No other injuries were reported.
Sayreville Mayor Kennedy O’Brien said in a statement: “On this Good Friday, Sayreville is waking up to learn of a horrific incident that occurred overnight that shakes our community to its core.
“The loss of a 9-year-old child allegedly at the hands of a parent. Any time such senseless violence involves one of our children, it gravely affects all of Sayreville.
“I want to assure you the community is safe, as the Sayreville Police Department and the Middlesex County Prosecutor’s Office launches a detailed investigation this morning.
“On behalf of a shocked and saddened community, I want to say that Sayreville stands in solidarity with the child and the family and friends who are enduring this inconceivable ordeal.”