A woman arrested at the Ross St house appeared the following day in the Whangarei District Court.
A police spokeswoman declined to comment on any possible link between the Ross St incident and the death of the teenager at The Warehouse.
A Northland District Health Board spokeswoman said the teenager had been admitted first to Whangarei Hospital and then transferred to Auckland, and then back to Whangarei.
The spokeswoman said the health board was not investigating because it was a sudden death outside a hospital. The death has been referred to the coroner.
Another post on the Northern Advocate's Facebook page yesterday was from a woman who saw the teenager collapse and wanted to praise a member of the public who came to his aid.
"I just wanted to share that I was there when he collapsed and saw this amazing woman come to his aid, she didn't think twice about what to do and she worked so hard to keep him alive, along with some other ladies who also tried all that they could to help. My deepest sympathies to you all whanau - arohanui ki a koutou."