GALVESTON, Texas (AP) — A man already sentenced to death for a cold-case killing in Oklahoma pleaded guilty to murder Wednesday in the deaths of three girls whose disappearances in Texas also went unsolved for decades.

William Reece, 62, pleaded guilty in a courtroom in Galveston in the 1997 killings of 12-year-old Laura Smither of Friendswood and 17-year-old Jessica Cain of Tiki Island. He then pleaded guilty in nearby Angleton later Wednesday to murder in the disappearance and death of 20-year-old Kelli Cox of Denton. He was sentenced to life in prison in each case.

Reece was serving a 60-ye...