Police were called to the five-star Hotel President Wilson on Wednesday after two hotel employees, from Tunisia and Morocco, accused Hannibal Qaddafi, 32, and his expectant wife of beating them with a belt and a coat hanger.
It is still unclear whether Qaddafi's diplomatic immunity means he will avoid prosecution.
Hannibal, the second son of the Libyan leader, has frequently made headlines in Europe for all the wrong reasons.
In 2001, his diplomatic status enabled him to leave Rome after attacking three Italian policemen with a fire extinguisher in his hotel.
In September 2004, his bodyguard was arrested for attacking police in Paris after Qaddafi was stopped for driving 140 kmph (90 mph) through red lights on the wrong side of the Champs Elysees while drunk. The guard was given a suspended sentence of a month and a 1,500-euro ($2,300) fine, Qaddafi was not detained due to his diplomatic status.
Several months later, he was given a four-month suspended sentence and a 500-euro ($800) fine after beating up his 24 year-old female companion when she refused him access to a room at the InterContinental hotel in Paris. Later in the day, he broke furniture in another hotel and threatened police with a gun.
Before the second case went to court, without the attendance of Qaddafi, the French Foreign Ministry expressed its "displeasure'' to authorities in Libya about repeated incidents involving the Libyan leader's son.
