MCSO: Irvin Serghei Robles-Nunez and Danitza Michelle Calderon sought in Tonopah killing

TONOPAH, AZ - Authorities are attempting to locate two suspects connected to the deadly shooting of a 34-year-old man Saturday morning.

Officials with the Maricopa County Sheriff's Office believe Irvin Serghei Robles-Nunez, 22, is connected to the shooting and killing of Manuel Alvarez-Rivera in Tonopah,Ariz., according to a press release.

Officials allege Nunez shot Rivera with a .22 caliber handgun around 12:30 a.m. after the two got into an argument that quickly escalated. The victim was shot in the gut and died.

Authorities said Nunez then fled the scene in a white Pontiac Montana minivan and is believed to be headed for the Mexico border where he has family in Nogales, according to a press release.

The vehicle has an Arizona license plate: BEC 8420. The suspect is listed as "armed and dangerous," according to the release.

MCSO said Danitza Mitchelle Calderon, 21, and her four-year-old son, Irvin Robles Jr., are also in the vehicle. Calderon, who also goes by Danitza De Robles, is reportedly pregnant.

If you see any of these suspects you are asked to call 911 or contact the Maricopa County Sheriff's Office at 602-876-1011.

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