The source said a preliminary investigation was opened after two complaints were filed against Mr. Ramadan, a well-known figure in the Middle East.
Tariq Ramadan has thus far denied any wrongdoing, but the Paris prosecutor's office is investigating the allegations, the Associated Press reported.
A regular panellist on TV debates with two million Facebook followers, Ramadan has been accused by secular critics of promoting a political form of Islam.
For the record, two women lodged rape complaints against the 55-year-old Swiss national in October accusing him of raping them in a hotel room.
LG G6 launching in Moroccan Blue, Lavender Violet, and Raspberry Rose
LG took to its online newsroom Tuesday to reveal that its V30 color options are coming to the G6 and Q6 smartphones. To some consumers disappointment, the new colours are not met with the release of a major new software update.
The allegations emerged late a year ago and prompted Ramadan to take a leave of absence from his post at Oxford.
Lawyers for the married father-of-four have accused Ayari of slander and suggested the women colluded to try disgrace him.
The writer and activist had described the attack in a 2016 book without naming Ramadan as the alleged attacker.
In November another woman, a convert to Islam who has remained anonymous, accused him of raping her in 2009.
China Eastern Cancels Holiday Flights Amid Dispute With Taiwan
They included a northbound route known as M503, which travels up the Taiwan Strait that divides China from the self-ruling island. Moreover, of 70 flights had been cancelled by Xiamen Airlines which blamed Taiwan for the hitch and labelling them as heartless.
Ramadan was elected by Time magazine in 2000 as one of the seven religious innovators of the 21st century and in 2004 as one of the 100 most influential people in the world.
Ramadan, whose grandfather founded the Islamist Muslim Brotherhood in Egypt, has taken a leave of absence from his post as a professor of contemporary Islamic studies at Oxford University.
French authorities arrested a leading Islamic Scholar from Oxford over allegations from multiple women who say he committed sexual assault and rape, twice in France.
Trump Signs Order To Keep Prison At Guantanamo Bay Open
The order says the USA may transport additional detainees to the detention center in Cuba, when necessary to protect the nation. The order also said that U.S. detention operations at Guantanamo Bay are safe, legal, humane and consistent with global law.