Pop star Liam Payne had multiple drugs including crack cocaine and methamphetamine in his system when he fell to his death from a hotel balcony in Argentina, according to initial toxicology reports cited by US media on Monday.ABC News and TMZ said a cocktail of drugs called “pink cocaine” — containing methamphetamine, ketamine and MDMA — had been found during a partial autopsy, citing anonymous sources familiar with the preliminary tests.