Blood was found in the sports-utility vehicle driven by Juan Carlos Tellez, who is being held in the Salt Lake County Jail and investigated in the disappearance of a Carson City, Nev., woman, according to a court document.
Bertha Anguiano, 33, a Carson City video store owner, has been missing since Nov. 10, when she was last seen dropping one of her sons off at school.
Nevada authorities linked Tellez to Anguiano because they allegedly had an affair.
Tellez, who has a sister who lives in Salt Lake City, and an acquaintance, Joaquin Barcelo, were arrested Nov. 21 in Salt Lake County after Tellez allegedly pulled a gun from his waistband as police approached him. An officer in an unmarked car hit him.
According to a search warrant affidavit filed last week in 3rd District Court in Salt Lake City, blood was discovered on the roof, right rear passenger door and rear compartment of the SUV that Tellez drove.
Officers obtained oral swabs and a blood sample from Tellez "for elimination purposes."
Salt Lake County sheriff's detective Courtney Nelson said the swab and blood were obtained Dec. 3, but forensics analysis will not be performed in Utah. "We're releasing it to Carson City," Nelson said.
Court documents said police learned Anguiano was missing "under suspicious circumstances" on Nov. 10 when they found Anguiano's 3-year-old son alone at a Smith's grocery store in Carson County, Nev., with a bloodstain on his clothing.
The bloodstain was tested. "The results of that testing indicated the profile of a female related to" the boy, the affidavit states.
The 3-year-old boy reportedly told officers that Tellez had hit his mother in the head with a wooden object or shovel, wrapped her in a blanket and placed her in the back of a blue truck.
Search and rescue teams in three northwest Nevada counties have searched for Anguiano. They're focusing along a 60-mile stretch of U.S. 50 between Carson City and Fallon, Nev., where Tellez rented a hotel room, Carson County sheriff's Sgt. Bob White said.
"He lived in Carson City for about a year, then he went to Fallon, then to Salt Lake City," White said.