Roswell Police announced early Saturday that a man has been arrested in the fatal shooting of his girlfriend.

Jimmy Aragon, 37, was arrested at about 2 a.m. and is charged with one count of first-degree murder in connection with the shooting death of Jasmine Elizabeth Martinez, 29, according to a press release issued by the Roswell Police Department.

In addition to first-degree murder, Aragon faces charges of aggravated assault, felon in possession of a firearm and tampering with evidence.

Martinez was found dead from a gunshot wound to the head Friday shortly after 8:30 a.m. in the 200 block of East Deming Street when police responded to an anonymous 911-caller reporting a shooting, according to the release.

When police arrived, Martinez was found dead with her head covered with a trash bag. Aragon was found passed out wearing latex gloves and possibly intoxicated while sitting on the porch of the residence in possession of a handgun, which investigators believe was used to shoot Martinez.

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Investigators believe Aragon either tried or was planning to dispose of the body, according to the release.

Aragon was then taken into custody for the rest of Friday.

Investigators believe that before the shooting, Aragon and Martinez arrived at the East Deming Street house where other people were already present.

The release states that while they were in the house, Aragon walked up behind Martinez and shot her in the head. Investigators believe Aragon shot Martinez because he thought she had stolen some of his property while he was incarcerated.

Breaking news reporter Alex Ross can be reached at 575-622-7710, ext. 301, or at breakingnews@rdrnews.com.