The Fort Worth Star-Telegram reports authorities responding last week to a call of a suspicious person arrested Matthew William Woychik in northeast Mississippi.
He was held Monday on suspicion of murder at the Lee County jail, where Fort Worth detectives traveled to interview him.
Woychik lived briefly at the Fort Worth home of 43-year-old Tammy Bates. She had taken him in to help cover mounting bills. A friend of Bates filed a missing person report Dec. 1.
Authorities say Woychik killed Bates and hid her body in the garage, where it was discovered Jan. 27 by an acquaintance.