French radio station 20 Minette said that the French judiciary has expanded the scope of investigations to include two new cases of rape, in addition to previous cases.
With Ramadan appearing before the investigating magistrates in Paris, more charges were added regarding the rape of two other women who had been identified by investigators from the pictures on his computer.
Ramadan, 57, a Swiss-Egyptian citizen living in France, was accused of raping a woman who suffers from a disability in 2009 in Lyon, France, and a feminist in 2012 in Paris.
The two women did not file complaints against him, but both say they were involved in illegal relationships with Ramadan, one from November to December 2015 and the other in March 2016.
Ramadan, a father of four, was a professor of contemporary Islamic studies at Oxford University until he had to leave when rape charges surfaced in late 2017.
Ramadan was held in February 2018 for more than nine months before being granted bail on allegations that he raped two women in France – one in 2009 and one in 2012.
Tariq Ramadan has been prevented from leaving French territory since his release from prison. For the second time, the judiciary rejected his request to allow him to visit his home in London.