31-year-old Pedro Castellon Medina is accused of murdering Pedro and Marybel Jimenez of San Jose on July 23, 2012. (San Jose Police) 31-year-old Pedro Castellon Medina is accused of murdering Pedro and Marybel Jimenez of San Jose on July 23, 2012. (San Jose Police)

SAN JOSE (CBS SF) — A suspect in Monday’s double murder of a San Jose couple may have fled to Southern California intending to run to Mexico, police said.

Pedro Castellon Medina, 31, of San Jose was believed to be responsible for the shooting death of Pedro and Marybel Jimenez in their home in the 300 block of North Seventh Street at about 4:20 a.m.

Pedro Jimenez, 28, and Marybel, 27 were pronounced dead after they were discovered in the home. Neighbor Renee Zarate helped the couple’s three children out of the house after hearing shots from across the street.

Zarate heard screaming coming from the house before the shots, and then saw a man in a black hooded sweatshirt flee. After that, she recovered the three children, ages 3, 5 and 8, and guided them out of the house, afraid the gunman may return.

Police suspect that the murder was a domestic violence incident. According to Zarate, Marybel and Pedro Jimenez had just reunited after a separation, and she speculated that the shooter might have been Marybel’s ex-boyfriend.

Medina is believed to be either on his way to Southern California or already there, according to police. He may be heading to Los Angeles, San Fernando, San Diego or Mexico.

Police suspect Medina knew that he was wanted and advise citizens not to attempt to apprehend him as he was considered armed and dangerous.

(Copyright 2012 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)