Texas police have made an arrest in the murder of a missing El Paso woman whose body was found in the Red Sands desert earlier this week.

Christopher Paul Maya, 34, was charged Wednesday with the death of Michelle Morales-Nakaza, a 32-year-old mother of three who disappeared last month, according to KDBC.

As CrimeOnline previously reported, Morales-Nakaza was last seen at a Baskin Robbins on March 27 and may have gotten a ride from someone in a white Toyota Camry, police said.

An arrest affidavit says that Maya admitted to witnesses that he killed Morales-Nakaza, and, according to one of the witnesses, was “excited” about having done it, KDBC said .

The witness said that Maya and Morales-Nakaza had been in a “toxic relationship for years,” according to the affidavit, and that Maya had said he was going “kill her” on several occasions.

The witness said Maya had asked for help removing surveillance cameras outside a private home, which seemed suspicious. The next day, the witness saw a missing persons flyer for Morales-Nakaza and asked Maya what happened.

Maya reportedly said that he and Morales-Makaza had been asleep in a white Toyota Camry in an unknown driveway. When he awoke, Maya said, his wallet was missing. Assuming Morales-Nakaza had taken it, he shot her twice in the chest and in the face.

Maya reportedly told the witness he ditched the body, his personal cell phone, and the car in the desert.

A second witness saw Maya in the Camry, which had blood in it. The witness asked Maya if he had killed someone, and he replied, “Yes,” the affidavit says.

Maya has been jailed on a $1 million bond.

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[Featured image: Michelle Morales-Nakaza/Facebook and Christopher Paul Maya/El Paso County Sheriff’s Office]