A 25-year-old mother who police said killed her two children told detectives she shot them after an argument with her boyfriend, a court document states.

A detective wrote in an interim complaint that Perla Morales said her boyfriend threatened to leave her and that she admitted to shooting her children "multiple times".

The shooting occurred Saturday shortly after 7 p.m. in the 900 block of West Calle Colado, near West Valencia Road and Interstate 19 in the Elvira Neighborhood.

Morales called 911 and said she needed an ambulance because her children were dead, the document states. When the 911 operator called Morales back, Morales told the operator that she shot her kids and cut her wrists, the complaint says.

Tucson Fire Department paramedics and police found 17-month-old Richard Rosovich Jr. and 4-year-old Emma Rosovich with multiple gunshot wounds, according to the complaint.

Richard was pronounced dead at the house at 7:27 p.m., and Emma was taken to a hospital, where she died at 8:06 p.m., the document states.

Morales also was taken to the hospital, with injuries that were not life-threatening, and she was arrested Sunday on suspicion of two counts of first-degree murder and two counts of child abuse.

Child Protective Services had no prior contact with Morales or the children, said Tasya C. Peterson, a state Department of Economic Security spokeswoman, on Monday.

"She loved her children. She was a good mother," said Sandy Ramirez, a cousin of Morales.

Morales struggled with depression, said Teddy Rosovich, the uncle of Morales' boyfriend, Richard Rosovich Sr., 36.

"I tried to get her to go for mental health counseling, or to see a therapist. But she would never go," Teddy Rosovich said Sunday.

Lupe Wilson, a family friend who was with Morales' mother Sunday, said family members are struggling and trying to cope because they have no answers. "The family needs a lot of prayers. That is what they need," Wilson said.

Morales and Richard Rosovich Sr. had been together about five years, Teddy Rosovich said. Emma was not his biological child, but Richard raised her as his own.

"Richard loved those children," said Teddy Rosovich, who described little Richard and Emma as very loving. "They would run and hug and kiss me when I'd go visit them," recalled Teddy Rosovich.

Morales, whose bail was set at $1 million, is scheduled for a preliminary hearing in Pima County Justice Court on Aug. 22 at 1:30 p.m.

Contact reporter Carmen Duarte at cduarte@azstarnet.com or 573-4104.