A fire at a training complex for a soccer team in Brazil early Friday killed at least 10 people, with one local report identifying the victims as youth soccer players.

The fire occurred on Friday at the Ninho de Urubu training ground of Flamengo soccer club in western Rio de Janeiro. Flamengo is one of the biggest and most popular clubs in Brazil.

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Firefighters said the victims have yet to be identified. Local media reported that the fire happened in a dorm where young players sleep. Images from Globo TV from a helicopter showed smoke emerging from a charred area.

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Like many professional clubs in soccer-crazed Brazil, Flamengo has a youth development program for promising young players. Many players stay at the facilities while training.

The world-renowned club brought up World Cup winners including the likes of Romario and Ronaldinho.

Current Real Madrid player Vinicius Junior, who played for the club, wrote on Twitter: "Such sad news. Pray for everyone. Strength strength, strength."

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The state-of-the-art complex had undergone a $6 million expansion and opened two months ago, Reuters reported.

This is a developing story. Check back for updates. The Associated Press contributed to this report.