A man serving a life sentence on a first-degree murder charge is dead. Thirty-four-year-old Ryan Lynn Horton was found unresponsive in his cell at the State Correctional Institution at Somerset on April 11th. An investigation into the cause of death is underway. Horton had been at SCI Somerset since February, 2021, after he was convicted in the fatal shooting of 60-year-old Edward Gilhart from Maryland in June of 2016.