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
James Nesbitt ‘in awe’ of Christmas efforts at Marie Curie Hospice
Michelle O’Neill to tackle Starmer for ‘prioritising weapons of war over people’
Vaccination appeal amid ‘very concerning’ increase in flu cases
Police probe report of shot fired at a house in Newry
MLAs clash with officials over Bill to make school uniforms more affordable