Eman Al-Obaidi made headlines around the world, forcing her way into a Tripol hotel in March to tell foreign reporters about her rape ordeal at the hands of pro-government militia.
Now investigators in Libya say more than 300 rape complaints have been received against forces loyal to Muammer Gaddafi.
Rape investigator and professor of psychology Seham Sergewa said: “We have found in east Libya 259 women who have said they have been raped so far and I have reviewed 140 women.”
The head of a UN inquiry said he could not confirm if there has been a systematic policy of rape, while Libyan officials strongly deny the charges.
Government spokesman Moussa Ibrahim said: “It’s the same old nonsense. We have always asked time and again for people to come on the ground and investigate all accusations against us.”
The International Criminal Court is investigating the claims, while the UN team has accused Gaddafi forces of murder and abductions. But it also says opposition forces have committed crimes.