A post mortem will be carried out to establish the cause of the death of the man found in a flat in Coagh.
He's been named locally as Darren Taylor.
He's the second person to die of an apparent drugs overdose in the area.
A few weeks ago, 21-year-old Amy Reid from Coolnfranky Park was found dead in the same flat in Hanover Mews.
Darren's father is believed to be the late Jim Taylor, a wildfowler shot dead by the SAS while on a hunting expedition in Coagh.
At the time of the shooting, the SAS claimed that they were in a 'terrorist situation'' and were 'acting in good faith'.'
Rory McDonald, a project worker with Breakthru in Dungannon is appealing to young people to be wary of drugs:
Political representatives are also calling for young people to shun drugs including DUP Assembly Member Keith Buchanan:
Ulster Unionist Assembly Member Sandra Overend is appealing for people to report to the PSNI:
Terribly saddened to learn of another death in the Coagh area, coming just weeks after the tragic death of Amy Reid.https://t.co/QOveuGIg35
— Sandra Overend (@over2sandra) November 22, 2016
Deeply sad to hear of the news that a young man has lost his life in Coagh. Thoughts and prayers are with the family at this terrible time.
— Mark Glasgow (@_MarkGlasgow) November 21, 2016