Ankara governor has banned an anti-corruption panel discussion by a communist party member, the day before it started.

The panel, “Zarrab Trial, Off-Shore Documents and Corruptions: What Should The Public Do?” scheduled to be held by Turkey’s Communist Party (TKP) executive Özgür Şen at a cultural center in Ankara, was banned over security concerns, the governor Ercan Topaca said in a statement on Dec 7.

In a New-York based trial, Turkish-Iranian gold trader Reza Zarrab and eight other people, including Turkey’s former economy minister Zafer Caglayan and three executives of the state-run lender Halkbank, have been recently charged with engaging in transactions worth hundreds of millions of dollars for Iran’s government and Iranian entities from 2010 to 2015 in a scheme to evade US sanctions.