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.
The allegations have not been proved, and the fact that an investigation is continuing does not imply that McGregor is guilty of a crime.
On Tuesday, McGregor announced his retirement from U.F.C.