Ryan was arrested in connection with the death of his father, Robert Ryan. Police say Ryan was apprehended just after midnight and is currently receiving treatment for injuries at a New York hospital while awaiting formal charges. (File Photo)Police say Thomas Ryan didn't live with his father in the home, and "has no other known current ties to the Greenville community." Police later identified that victim as Robert Ryan, Thomas' father. Greenville murder, arson investigationThe backstory:According to officials, Robert Ryan was killed before the house was set on fire.