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1. He was identified after authorities found part of his finger near the Bataclan, according to the BBC. At least 89 of the 129 people who died in the attacks were at the concert venue, The Associated Press reports.
2. Investigators reportedly have detained six of his family members. They haven't been arrested or charged with any crime, according to CNN.
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3. The 29-year-old had a history of petty crime from 2004-2010, according to news outlets. Le Monde reports that he was convicted eight times but did not go to jail.
4. He was from France. The BBC reports that the Courcouronnes native lived in Chartres until 2012 and frequented a mosque in the nearby town of Luce.
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5. He may have been "radicalized" in 2010. According to USA Today, authorities became aware of him that year. Officials are also investigating whether he visited Syria in 2014.