The demonstrators expressed anger at what they perceived as an initial cover-up. Prior to Tehran’s admission Saturday, it had denied shooting down the flight.
A group of Iranian protesters demanded Saturday that the country’s supreme leader, Ayatollah Ali Khamenei, step down after the government said its military had by mistake shot down a Ukrainian plane, killing all 176 people on board.
Also on Saturday, Iran briefly detained the British ambassador to Iran.
British Foreign Secretary Dominic Raab slammed the Iranian action as breaking international law.
“The arrest of our Ambassador in Tehran without grounds or explanation is a flagrant violation of international law,” Raab said. “The Iranian government is at a cross-roads moment. It can continue its march towards pariah status with all the political and economic isolation that entails, or take steps to deescalate tensions and engage in a diplomatic path forwards.”