The search for a missing Texas mother is entering its third week as police continue the investigation into her disappearance, which led to the arrest of her husband and his business partner.
Suzanne Simpson, 51, a mother of four, was last seen outside her San Antonio home on the morning of Oct. 7 by her neighbor. Neighbors called police after they saw her arguing with her husband, Brad Simpson, NBC affiliate WOAI reported.
A police report obtained by WOAI said a neighbor saw the couple physically fighting, with Brad Simpson "grabbing her upper torso area to gain control of her body." The neighbor later heard screaming coming from nearby woods and Brad Simpson's truck leaving an hour later.
Barbara Clark, Suzanne Simpson's mother, told WOAI last week that she knew of one previous physical altercation between the couple. Clark said she didn't understand what had happened before her daughter's disappearance.
"It wasn’t part of their life or his behavior, and I’ve known him a long time," Clark said.
She told the station at a candlelight vigil that she doesn't believe her daughter is alive.
Brad Simpson was arrested Oct. 10 and faces two charges of family violence, according to court records. The San Antonio Public Defender's Office, which is representing Simpson, declined to comment to NBC News on Wednesday.
The day after his arrest, a federal complaint was filed against him in U.S. District Court for the Western District of Texas. He's accused of unlawfully possessing a short-barrel rifle, identified as a Grand Power Stribog SP9 A3, that was not registered to him, according to the complaint.
The firearm was found during a search with a warrant at the Simpson home on Oct. 9 and was shown to the federal Bureau of Alcohol, Tobacco, Firearms and Explosives as part of the investigation, the complaint said.
James Vallee Cotter, Brad Simpson's business associate, was arrested over an allegation of tampering with evidence. The Texas Department of Public Safety announced his arrest Tuesday and declined to comment further.
Court records show Cotter's bond was set at $500,000, with conditions that included house arrest and an order that he surrender his passport to law enforcement. His attorney could not immediately be reached for comment.
Olmos Park police are looking for Suzanne Simpson with the help of the state Public Safety Department, even combing through a landfill to find any trace of her, but have come up short.
"After conducting an extensive search consisting of digging and sifting through the municipal solid waste, no evidence was found," the Public Safety Department said Thursday.