Gunmen threatened Argentine soccer superstar Lionel Messi in a written message left Thursday when they opened fire at a supermarket owned by his in-laws in Argentina, police said.

A parade to celebrate the Argentine World Cup champions was abruptly called off Tuesday as millions of people poured onto thoroughfares, highways and overpasses in a chaotic attempt to catch a glimpse of the national team that won one of the greatest World Cup finals of all time.

Argentines let loose on Sunday and streets across the country became places of celebration after an epic World Cup final in which the national team beat France on penalties. It was the country's third World Cup title, and the first since 1986.