The 31-year-old singer died outside a hotel in Argentina's capital Buenos Aires after falling from the third floor.
The 31-year-old singer suffered "extremely serious injuries" after falling from the third floor at the hotel in the capital Buenos Aires, police said.
Alberto Crescenti, head of the state emergency medical system, said on Argentinian television that Payne, who had a seven-year-old son with former Girls Aloud singer Cheryl, fell into a courtyard of the CasaSur Hotel in the city's Palermo neighbourhood.
The official declined to answer questions about how he came to fall from the balcony.
Mr Crescenti said authorities were investigating the circumstances of his death and conducting a po
st-mortem.