Steban pleaded guilty to 32 counts in seven cases, including the May 16, 2021, murders of Penn Township resident Jacob Erdeljac, 41, and his girlfriend, Mara Casale, 27.
He also pleaded guilty to firing shots into homes in Hempfield and Sewickley townships, attempting to steal a pickup at gunpoint, setting fire to his home in North Huntingdon and illegally possessing 11 guns.
In return for his pleas, prosecutors discontinued efforts to seek the death penalty against him for the murders.
Common Pleas Judge Tim Krieger imposed the terms of the plea bargain, which called for Steban to serve two life prison sentences without parole. He also received concurrent sentences totaling 46 to 92 years behind bars.