BUENOS AIRES, Argentina — An initial toxicology report for ex-One Direction singer Liam Payne, who died last week after falling from a third-floor hotel balcony in Buenos Aires, showed that he had cocaine in his system after his death, an Argentine official said.

The final toxicology results are not expected to be made public for some weeks. But the preliminary toxicology report of the wildly famous boy band star, handed to local prosecutors on Monday, suggested evidence of exposure to cocaine, the official said, stressing that these initial results don't offer an accurate reading of just how much was circulating in his blood when he died.