FRANKLIN, Pa. -- The man who led police to the murderers of 11-year-old Shauna Howe wants to withdraw his guilty plea and go to trial.

Ted Walker, 46, filed the motion Thursday to withdraw his third-degree murder and kidnapping plea.

That move comes a day after two brothers were convicted of the second-degree murder of Howe.

Walker served as the star witness in the case against James and Timothy O'Brien over the last three weeks in Venango County, after pleading guilty in exchange for his testimony.