A delegation from the Central Bank of Turkey will soon meet their Iranian counterparts in Tehran to remove hurdles in the way of bilateral banking relations. Particular difficulties include Iranian citizens' bank accounts in the Turkish Halkbank. The banking ties were overshadowed by the detention of a senior Halkbank official in the US in March for allegedly violating Iran sanctions. Mehmet Hakan Atilla was accused of conspiring with Reza Zarrab, an Iranian-Turkish gold trader, to channel hundreds of millions of dollars through the US financial system on behalf of Iranian companies. Turkish Minister of Economy Nihat Zeybekci is also scheduled to visit Iran on June 21 to negotiate a preferential trade agreement between the two sides.