A Google translation of an excerpt from https://mida.org.il/2018/06/17/%D7%90%D7%99%D7%A8%D7%90%D7%9F-%D7%9E%D7%95%D7%93%D7%94-%D7%9C%D7%A8%D7%90%D7%A9%D7%95%D7%A0%D7%94-%D7%A1%D7%99%D7%99%D7%A2%D7%A0%D7%95-%D7%9C%D7%A4%D7%99%D7%92%D7%95%D7%A2%D7%99-%D7%94-11-%D7%91/
A senior Iranian official confessed for the first time to his country’s involvement in the September 11 attacks, a series of suicide bombings on US soil in 2001, led by the Twin Towers.
In an interview broadcast on Iranian television two weeks ago and distributed recently on social networks, Mohammad Jawad Larijani, a senior Justice Ministry official who heads Iran’s Human Rights Council, said that Iran had aided al-Qaeda terrorists who carried out the attacks by allowing them free passage, Shelter for some of them.
The linked article contains a video with the confession.