Toxicology tests for Liam Payne found multiple substances in the singers system at the time of his death, according to a report from ABC News .

A preliminary autopsy of the former member of One Direction detected cocaine, crack cocaine and benzodiazepine, a widely prescribed class of sedatives and anti-anxiety medications sold under the brand names Valium, Xanax and Klonopin, among others.

Payne, who was 31 when he fell to his death at a hotel in Buenos Aires, Argentina , last Wednesday, also had a recreational drug known as pink cocaine in his system.

The drug cocktail, which also goes by the name Tusi, typically comprises a mix of methamphetamine, ketamine, MDMA and more, according to the U.S. Drug Enforcement Agency . In a report last month, the agency warned that the blend of substances was being sold across multiple locations in Manhattan, New York.