Former firefighter David Watson has been convicted in a triple murder case Friday.
A Pima County Superior Court jury found Watson guilty on all counts.
Authorities say he killed his ex-wife Linda Watson, who disappeared 16 years ago during a custody fight over her daughter. Her body was identified in 2013.
Watson underwent a trial for the same crimes last year but the jury could not reach a verdict. The hung jury triggered a retrial this year.
David Watson is also accused of shooting and killing Linda Watson's mother, Marilyn Cox, as well as family friend Renee Farnsworth in 2003 as she fought for visitation rights with the child.
David Watson was arrested and charged after a later ex-wife recanted her statements that David Watson was with her when Linda Watson disappeared and her mother was murdered.
After seven weeks of testimony from more than 60 people and more than 500 pieces of evidence, jurors listened to closing arguments this week and deliberated Thursday and Friday morning.