CHICAGO — A three-year-old boy was shot and killed while riding in the backseat of a SUV on the Southwest Side, Chicago police said Friday.

According to police, Mateo Zastro was sitting in the back seat of a car while his mother was driving northbound in the 4400 block of West Marquette Road when a rear-seat male occupant in a red sedan fired shots into the vehicle.

The woman’s three-year-old son suffered a gunshot wound to the head and was rushed to the hospital in serious condition and was later pronounced dead.

Three other children were inside the vehicle but were unharmed by the gunfire.

Police said the offender’s vehicle is possibly a red Charger or Mustang and are offering a $7,000 reward for information that leads to the arrest of the person who shot and killed Mateo.

No one is in custody.