The search for Suzanne Simpson, a missing Texas mother of four, has entered its third week.

Simpson, 51, was last seen on Oct. 7 after a neighbor witnessed her in a physical altercation with her husband, Brad Simpson, outside their San Antonio home.

Brad Simpson was arrested on Oct. 10 for family violence and later charged with unlawful possession of an unregistered short-barrel rifle.

His business partner, James Cotter, was also arrested for tampering with evidence, NBC News has reported.

Despite extensive searches, including a landfill investigation, authorities have found no trace of Suzanne.

Written by B.C. Begley