Irvin Adan Gonzalez-Martinez, an 18-year-old from Raleigh, was shot and killed on June 6, 2015, at a city park on Collegeview Avenue near NC State’s campus. He was with two friends, Daniel Pittman and Jose Valdovinos; Pittman was wounded and treated at WakeMed, Valdovinos escaped unharmed, and Gonzalez-Martinez died at the scene.

Raleigh police arrested four people in connection with the killing. Louis Mondragon, 20, and Enrique Valenzuela, 22, were charged with murder and with two counts of assault with a deadly weapon with intent to kill for the wounds to Pittman and shots fired at Valdovinos. Leonardo Steven Calvillo, 20, and Maria Guadalupe Nambo, 21, were charged with accessory after the fact to murder and with two drug-related violations; authorities say Calvillo and Nambo helped Mondragon avoid capture by booking a motel room under Nambo’s name and helping pay for it. The suspects were last seen leaving in a red four-door sedan, and police have said the attack was not random.

Did anyone in the Raleigh area see the red four-door sedan or have information about that night at the park?