2 arrested after police say man deliberately run over in jealousy-fueled murder

FONTANA, Calif. -- Homicide detectives are gathering evidence at the scene of a deadly crash in Fontana, Calif. after police said a man was intentionally run down in an alleged jealousy-fueled murder.

Fontana police said someone called them around 7 p.m. Wednesday and said a pickup truck had hit a person walking near a 7-Eleven on Alder Avenue and East Foothill Boulevard.

When officers arrived they found 18-year-old victim Cristian Dominguez-Aguilar, of Fontana, who was transported to a local hospital in critical condition and later died from his injuries.

Investigators believe Dominguez-Aguilar was run over by a 20-year-old man, identified as John Nieto, who believed Dominguez-Aguilar was having a relationship with the mother of his child, 20-year-old Elisabeth Mancilla, who occasionally gave Dominguez-Aguilar rides home from work.

Police said Nieto waited across the street as Mancilla dropped off Dominguez-Aguilar at the 7-Eleven.

Nieto then attempted to run Dominguez-Aguilar over in a white 2003 Chevy Silverado as he crossed the street.

Nieto didn't hit Dominguez-Aguilar on his first attempt, but continued to chase the victim in the truck as Dominguez-Aguilar ran, police said.

Nieto eventually hit Dominguez-Aguilar with the truck and then crashed into the 7-Eleven, disabling his vehicle and fleeing on foot.

According to police, Mancilla witnessed the crime and did not call police or attempt to render aid to Dominguez-Aguilar. Instead, she drove her vehicle down the street to pick Nieto up, police said.

Mancilla then drove Nieto to his residence in San Bernardino before returning home to Rialto, investigators said.

Nieto and Mancilla were arrested at Mancilla's residence Thursday morning. Nieto was charged with murder and Mancilla was charged with accessory to murder.

Anyone with any further information related to this incident is asked to contact Det. Jason Coillot at 909-350-7700, in reference to case #17-21044.