NAVAJO COUNTY, Ariz. - Navajo County officials have identified the suspect and victims in a Tuesday shooting outside a Holbrook courthouse that left two women dead and another person wounded.

Salomon Diaz of Snowflake was arrested after the shooting, which stemmed from a dispute after a custody hearing regarding two children. The 47-year-old, who is the paternal grandfather of the children, has been booked into jail by the Navajo County Sheriff Office.

“Mr. Diaz exited the court and the county building and went to his car in the parking lot and obtained a semi-automatic pistol,” said Jim Molesa of the Navajo County Sheriff's Office.

Ashley Utley, the children's 25-year-old mother, and Sherry Quintero-Davenport, their 45-year-old grandmother, were shot multiple times and killed. Sixty-eight-year-old Angela Chambers, aunt to the children, was wounded in the shooting. She was taken to a Winslow hospital and is expected to make a full recovery.

The complex was immediately placed on lockdown in response to the shooting, while authorities searched for Diaz.

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“Mr. Diaz was taken into custody a short time later in back of the county complex and at that time he was unarmed,” Molesa said.

Authorities believe the suspect ditched the weapon before he was arrested and they continue to search the gun.

Diaz’s home was surrounded by police tape Wednesday as officers conducted a search of the home.

A woman who identified herself as Diaz’s wife declined to speak on camera to 12 News, but said that the children were in the couple’s custody. She added that she and her husband were very concerned about the children’s wellbeing in Utley's custody.

The woman claimed Utley abused the children, who are now in Child Protective Service’s custody.

Diaz is being held on $2 million bond. He faces two counts of first-degree murder and one count of aggravated assault.

The Department of Homeland Security is also looking into the legality of Diaz’s citizenship in the country.

Copyright 2016 KPNX