Liam Payne's father, Geoff Payne, is working with the Argentine authorities in their investigation into the singer’s unexpected death on Wednesday, Oct. 16.

Pink cocaine,' a party drug reportedly found in Liam Payne's system at his time of death, often contains ketamine, MDMA and methamphetamine — but not cocaine.

An initial toxicology report on pop star Liam Payne shows he had cocaine in his system when he fell to his death from the third floor balcony of his hotel room in Argentina, The Associated Press reported.