( Loveland ) - Investigators say it was a single stab wound to the chest that killed 26-year-old Cody Sullivan on Thursday afternoon.

Emergency crews were called to the Chapelwood Apartments on Loveland Avenue just east of Rich Road. 50-Year-Old John Cainion (pictured) is Sullivan's stepfather. He says he stabbed the man in self defense. Sullivan was pronounced dead at the hospital.

Cainion is being held on a $500,000 bond.

If you can help police, call CrimeStoppers at 513-352-3040 or text CINTIP plus your message to CRIMES.