Kaylem Rayne Webb-Hirst (16) and Michael Shelford Mauheni (17), both of Oamaru, died when the vehicle in which they were passengers crashed and caught fire at the intersection of TY Duncan and Shortland Rds on June 12.
The bodies of the two teenagers were discovered in the vehicle when fire crews arrived at the scene shortly after the crash.
The 18-year-old driver, also of Oamaru, survived and was admitted to Dunedin Hospital with serious injuries.
Detective Sergeant Hannah Booth, of Oamaru, said as the teenager had only recently been released from hospital, he had yet to be formally interviewed by police.
It was anticipated he would be spoken to ''soon'' she said.
Until that happened, it was not clear if charges would be laid.
''We are yet to speak to the driver, so we can't make a decision until we have done that. Inquiries are still being made in relation to the driver,'' she said.
The police were not able to comment on the circumstances that led to the single-vehicle crash, which was still being investigated, until the driver had given a formal statement, Det Sgt Booth said.
The serious crash unit was at the scene for several hours following the crash.
