Serena Harding's death: Five bailed over drugs offences
Five people arrested after a 16-year-old girl died from a suspected drugs overdose in Greater Manchester have been released on police bail.
Serena Harding, from Rixton in Warrington, was found unconscious in Reddish Vale Country Park in Stockport shortly before 23:00 BST on Sunday.
She was taken to Stepping Hill Hospital but pronounced dead shortly afterwards.
Four men, aged 18 to 20, and a woman, 25, were being questioned on suspicion of drugs offences, police said.
Two other men arrested in Longsight continue to be questioned on suspicion of drugs offences, a spokesman added.
A Home Office post-mortem examination carried out on Monday proved inconclusive and police are awaiting the results of toxicology tests.
Miss Harding's parents, Diane and Kenneth, said they had no knowledge of their daughter, who had Crohn's disease, taking any drugs.
She was looking forward to her birthday on Saturday and was saving for a college trip to New York, they said.
Paying tribute to her on Monday, they said she was "very thoughtful", kind and "very affectionate".
They added: "She will be missed so much. We feel there is a huge hole in our lives that can never be filled and cannot believe that she's just not there anymore."
Greater Manchester Police has urged anyone with any information to contact the force.