State Police in Clearfield are investigating an assault in Osceola Mills.  Troopers say two men wearing black ski masks entered this home along Pruner Street Sunday night around 10:30.  Investigators say they hit the homeowner with aluminum bats several times in the head, neck and arm.  The victim told Police he was able to run upstairs and call 911.  Police say the two suspects ran away.  Anyone with information should call State Police.