Joshua Brock, of Okehampton, and Aaron Reilly, from Chagford, died in the early hours of Saturday morning after collapsing at Pryzm nightclub in Barbican Leisure Park, Plymouth.
An 18-year-old man who was arrested in connection to this incident has been released under investigation, pending further enquiries.
Detective Inspector Julie Scoles said yesterday: “It is currently believed that the two men who died were part of a larger group who had taken what they thought to have been MDMA.
“Many of the group were from Okehampton and had visited
Plymouth to attend the Basshunter set at the Pryzm nightclub
“We are investigating these deaths and have located the rest of the group who are thankfully showing no ill-effects at this time.”
The families of the two teenagers have also paid tribute to them.
The family of Aaron Reilly, said: “Aaron was a much loved son, brother, grandson and boyfriend. He loved to skate, play computer games. Like most teenage lads he liked a night out with his friends and was respected by them as a non-drug user.
“Aaron had the whole of his life ahead of him and it has all been taken away from him way too soon by one stupid mistake and not knowing the devastating consequences.”
The family of Joshua Brock, who studied at Exeter College, paid tribute to a young man who was a loving son to Steve and Sandra, an inspirational brother to Liam and Demelza and a loyal mate to all his friends.
“Joshua was in his third year studying for a diploma in aircraft engineering at the Flybe Training Academy in Exeter when his life was cut short.”
They continued: “He was the kindest, most helpful person you could hope to meet and had a great sense of humour.”
The headteacher of Okehampton College Derrick Brett, which both boys attended up to year 11, was quick to pay a touching tribute to the pair.
Mr Brett said: “It was with great sadness that we learned of the deaths of Aaron and Josh over the weekend. Everyone at the college is thinking of them, their families and friends at this difficult time and we send them our sincere condolences.
“They were lovely, hard-working lads who contributed much to the life of the college. College staff and students alike remember both Joshua and Aaron fondly as two people who were a pleasure to know.”