Binance will stop all transactions and trading in Nigeria's local currency after March 8th amid a country-wide crackdown on crypto exchanges that have been blamed by authorities for feeding a black market for foreign exchange. It will stop supporting withdrawals after Friday and any remaining balances in Nigerian Naira will be automatically converted into Tether - a stablecoin whose value is pegged to the U.S. dollar. Last week, Nigerian authorities detained two Binance senior executives on undisclosed charges as part of the crackdown. They were still in custody, their local lawyer said before a parliamentary committee on Monday.