A woman and two children were found dead in a Denver home Feb. 6. One child was taken to a hospital. Irene Nuñez, a cousin, identified them as Mayra Perez, 23, her daughter, Nevaeh Morales, 4, and son, Erick Perez, 1. Daughter, Isabel, 2, is the survivor. (Courtesy of Irene Nuñez, The Denver Post)
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A northeast Denver woman who police said shot her three children before killing herself used two guns, court records show.

Mayra Perez, 23, used both a shotgun and a handgun in the Feb. 6 shootings, Denver police homicide detectives wrote in an application to search the family's home in the 4900 block of North Pearl Street.

Perez, her oldest daughter, Nevaeh Morales, 4, and her son, Erick Perez, 1, died of gunshot wounds. Her other daughter, 2-year-old Isabel Perez, continues to recover at Denver Health Medical Center from a gunshot to the head. Doctors said they expected Isabel to transfer to Children's Hospital Colorado on Monday.

The search warrant affidavit and its inventory offered new glimpses into the shootings, which confounded Mayra Perez's relatives in Canutillo, Texas. Her husband, Ricky Perez, told detectives they had argued the night before and he went to a friend's house to cool off. The friends also told police he had stayed with them that night.

When he returned home about 6 a.m. to take the children to school, he found their bodies inside a bedroom and called 911, the affidavit says.

Mayra Perez had a shotgun in her lap. An officer also noticed a small-caliber handgun on the mattress.

Detectives recovered shotgun shells, spent casings and spent bullets inside the home, according to an inventory.

Sadie Gurman: 303-954-1661, sgurman@denverpost.com or twitter.com/sgurman