The deadly incident occurred at approximately 5:45 p.m. at 906 Crown St., near the intersection of Ohio Street, in Greencastle's South End.
Greencastle City Police officers were dispatched to the scene at 5:48 p.m. in reference to a stabbing that had just occurred.
Upon officers' arrival Tommie Badgley, 53, was found inside the residence, suffering from a stab wound to the upper chest.
He was pronounced dead at the Putnam County Hospital, according to a GPD press release.
After interviewing witnesses at the scene, investigators determined that the parents, Tommie and Debbie Badgley, had been contacted due to a medical issue with their son, Thomas Badgley.
Once the parents arrived at their son's Crown Street residence, a physical altercation reportedly took place between Tommie Badgley and Thomas Badgley, which resulted in the son allegedly stabbing the father.
Thomas Badgley is currently in custody at the Putnam County Jail. He was booked in for murder at 12:24 a.m. Thursday.
Authorities are releasing no further details in the incident at this time, Greencastle Chief Tom Sutherlin said.
Investigating agencies are the Greencastle Police Department and the Indiana State Police. Putnam County Sheriff's Department officers were also on the scene.