Police in Phoenix have issued an arrest warrant for a man accused of abducting his two sons after fatally shooting their pregnant mother and another man. The Phoenix Police Department said investigators have probable cause to arrest 47-year-old Dimas Coronado on suspicion of three counts of homicide, CBS Phoenix affiliate KPHO-TV reports.

"He is considered armed and dangerous," Sgt. Armando Carbajal of the Phoenix Police Department told the station in an email.

On Saturday, authorities issued an Amber Alert for the two boys, 8-year-old Victor Coronado-Nunez and 5-year-old Jonathan Coronado-Nunez. The alert remains active as of Sunday morning.

Police said they responded to a double shooting at 4:30 a.m. Saturday morning. The victims were identified as 24-year-old Oralia Nunez, the mother of the boys, and 34-year-old Omar Gonzalez. A cousin told KPHO Nunez was eight months pregnant.