A Sedgwick County jury has convicted a 47-year-old man of strangling a Wichita woman in 2011 while he was on parole for murder.

The Wichita Eagle reports the jury Friday convicted Tyrone Walker of first-degree murder in the June 2011 death of 44-year-old Janis Sanders.

Walker was convicted in Douglas County of second-degree murder in the death of 25-year-old Tamara Baker, who was reported missing on Oct. 31, 1989. Walker was sentenced to 12 years to life in prison on that charge and was paroled in February 2011.

Prosecutors said Walker’s DNA was found under Sanders’ fingernails and on the shoestrings that were used to strangle her. Defense lawyer Steve Mank argued that prosecutors had not proved beyond a reasonable doubt that Walker killed Sanders.

Sentencing is Aug. 1.