According to TMZ, Reid Flair’s tragic death on March 29, 2013 was the result of an ‘accidental overdose of heroin and other drugs.’ His autopsy also revealed trace amounts of Clonazepam and Xanax in his system.
Credit goes to TMZ, and the full story can be found here: http://www.tmz.com/2013/06/14/ric-flairs-son-autopsy-shows-drugs-were-a-factor/