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At around 4 a.m. on Saturday, officers responded to a call and arrived to find the children's 24-year-old mother, Oralia Nunez, and a 34-year-old housemate, Omar Gonzalez, suffering from gunshot wounds. Nunez was taken to a hospital and pronounced dead, and Gonzalez was found dead in the home. Phoenix police have developed probable cause to arrest Coronado for three counts of homicide, including Nunez, Gonzalez, and Nunez's unborn child.

Nunez's cousin, who found the crime scene when she came home from work, also lived at the home with Nunez, Gonzalez and the two boys.

\"PHOTO:
Phoenix Police Department
PHOTO: Jonathan Nunez-Coronado, 5, and Victor Nunez-Coronado, 8, are pictured in this undated photo released on Sept. 1, 2018.
>

Coronado and Nunez, who were married for nine years, had been estranged for the past few months, and had a history of domestic abuse incidents that had recently escalated, Carbajal said. During their estrangement, Coronado had been living down the street from the boys and their mother.

\"Given the violence at the scene and given that he is wanted for the homicide of the boys' mother, as well as the roommate, we believe the boys to be in danger,\" Carbajal said. \"And we believe he's armed, so we're asking anyone with information to please call the police department.\"

\"PHOTO:
Phoenix Police Department
PHOTO: Dimas Coronado is pictured in this undated photo released on Sept. 1, 2018.
>

Police believe Coronado, who is Mexican, may have fled across the Southwestern border to Mexico, where he has family. The Phoenix police don't yet have confirmation on the legal status of Coronado, Nunez or the boys, according to Carbajal, and don't know if Coronado is in Mexico, but are working with Mexican law enforcement partners.

Nunez's cousin told officers the two brothers were at home with their mother the night before she was killed.

Police were initially looking for Coronado's white Chevrolet pick-up truck, but found it near the house Saturday with no sign of the boys or their father. In an updated Amber Alert, police said they believed Coronado is driving an aqua-green Ford pickup truck with a Mexican license plate.

\"PHOTO:
Phoenix Police Department via AP
PHOTO: This combination of undated photos released by the Phoenix Police Department on Saturday, Sept. 1, 2018 shows, from left, missing brothers Victor Nunez-Coronado, 8, Jonathan Nunez-Coronado, 5, and their father, Dimas Coronado, 46.
>

The listed vehicle has been located in Phoenix. The children and person of interest remain outstanding. #AmberAlert is still in effect. If anybody has information regarding this case, please call the @phoenixpolice department or Silent Witness @480witness. https://t.co/2AJIhm77ME

— Phoenix Police (@phoenixpolice) September 1, 2018

Coronado is described in the Amber Alert as approximately 5 feet 6 inches tall and 190 pounds, with gray hair and brown eyes. Jonathan, 5, is around 3 feet tall, and Victor, 8, is around 4 feet tall. Both boys have black hair with brown eyes.

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