Liam Payne, 31, tragically fell from the third-floor balcony of the CasaSur Palermo Hotel. An autopsy report revealed that he had a toxic mix of drugs in his system, including crack cocaine and "pink cocaine," a combination of ketamine and other dangerous substances.

The death of One Direction star Liam Payne was a shock to fans and friends, and while three arrests have been made in the case, that saw Payne fall to his death, there are still many unanswered questions.

Singer Liam Payne's girlfriend, Kate Cassidy has reportedly agreed to speak to the police in Argentina concerning Payne's death. The former One Direction star passed away on October 16 after falling from the third-floor balcony of a Buenos Aires hotel.

Liam Payne's girlfriend, Kate Cassidy, is assisting Argentinian authorities in their investigation into his tragic death.

Kate Cassidy was with Payne just two days before he died when he fell from the third floor of a Buenos Aires hotel on October 16.