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DUBLIN — Conor McGregor, the Ultimate Fighting Championship’s biggest star and one of the world’s highest-paid athletes, is under investigation in Ireland after a woman accused him of sexual assault in December, according to four people familiar with the investigation.
McGregor has not been charged with a crime. Following the usual protocol in criminal investigations in Ireland and much of Europe, where a formal charge does not necessarily follow an arrest, McGregor was arrested in January, questioned by law enforcement authorities and released pending further investigation, according to the people.