Police subsequently advised there was not enough evidence to justify criminal charges being laid, and Windley held a third inquest hearing in December 2018. On Friday, Windley released a 78-page report of her investigation, which found the exact cause of Thongsi’s death could not be determined. Windley found it was “unlikely” Thongsi’s death was caused by equipment failure, lack of air, a natural event such as a shark attack, or her history of migraines. The coroner also found no evidence that Thongsi died of a sudden acute medical event. A scuba-dive gone wrong On the morning of February 8, 2015, Thongsi went scuba diving with a group off Motunau Beach.