Conor McGregor is waiting for the results of 'key physical tests' and 'the examination of film evidence' before learning whether he will be re-arrested over alleged sexual assault and indecent exposure.
The Ultimate Fighting Championship star was taken into police custody on the French holiday island of Corsica last Friday following a complaint from a young woman.
She has claimed the 32-year-old Irishman assaulted her and showed off his manhood following a heavy drinking session in the upmarket port town of Calvi on September 6.
Conor McGregor is waiting for physical test results before learning if he will be re-arrested
McGregor is pictured in Calvi, Corsica on Thursday, the same day he was arrested by police
The Irishman was taken into police custody over alleged sexual assault and indecent exposure
McGregor was released on Saturday without charge, but the criminal case is still active and he could be summoned before a magistrate later this week.
'Key physical tests were carried out on the suspect, but the results will not be known until after the weekend,' an investigating source said on Sunday.
'These tests are of a routine nature following incidents like this, but they take time, to make sure there is no doubt about them.
'It is also possible that the incident being complained about was filmed. It took place in a very busy place, where fixed cameras are situated everywhere.
A woman has claimed the 32-year-old assaulted her and showed off his manhood in Corsica
McGregor was released on Saturday without charge, but the criminal case is still active
The MMA fighter was in the region to take part in a voyage to raise awareness of water safety
'Lots of holidaymakers would also have been filming and taking pictures on their phones, so they also need to be spoken to.'
Tests for alcohol and drugs are common when suspects are arrested by police in France, especially following accusations of assault.
High Corsica, the area in which Calvi is situated, is also a coronavirus red zone where cases are on the increase.
Brooklyn bus attack - McGregor assaulted a vehicle full of fellow UFC fighters in 2018
Labelling German fighter a 'Nazi' - McGregor fought Germany's Denis