Iran's police chief said on Wednesday that an investigation had found no evidence that election protesters detained in a now closed detention centre had been raped as alleged by opposition groups.
"It has been proved that there was no rape in Kahrizak," the ISNA news agency quoted Esmail Ahmadi Moghaddam as saying, referring to the notorious detention centre south of Tehran.
Moghaddam acknowledged that "some offences were committed" at the jail but he did not elaborate on the details.
Three of the centre's warders and around a dozen judiciary and police personnel are awaiting trial in the case.
Iranian opposition groups have alleged that several male and female protesters detained in Kahrizak were raped there.
Iranian officials have previously dismissed the allegations.
Iran's supreme leader Ayatollah Ali Khamenei ordered the closure of the detention centre amid reformist media reports that three protesters died after being beaten in custody there.
Iranian officials say that the jail was closed, as Khamenei believed it was "not up to the required standard."
The June 12 presidential election saw Mahmoud Ahmadinejad re-elected, but allegations of fraud prompted massive street protests.
{{/usCountry}}The June 12 presidential election saw Mahmoud Ahmadinejad re-elected, but allegations of fraud prompted massive street protests.
{{/usCountry}}In the initial crackdown on the demonstrations, some 4,000 people were arrested. Around 140 of them have since been put on mass trials.