An Aliquippa teen is awaiting sentencing after being found guilty of third-degree murder. A jury handed down the verdict to 18-year-old Ronald Foster yesterday and also convicted him of conspiracy to commit robbery. Police say Foster planned the robbery that resulted in the shooting deaths of 18-year-old Dane Mathesius and 16-year-old William Booher, who were in Aliquippa to sell drugs. The teen who allegedly pulled the trigger is awaiting trial.