Iran hangs two men accused of killing security official during protests

Iranian authorities have executed four men since the beginning of the protests

Iranians protest the death of 22-year-old Mahsa Amin (AP)

Authorities in Iran have executed two men accused of killing a security officer during an anti-government protest.

Protests have been taking place in Iran since September, with at least 517 protesters killed, according to Human Rights Activists in Iran, a group monitoring the unrest.

Mohammad Mehdi Karami and Mohammad Hosseini were hung on Saturday after being sentenced by the Iranian Supreme Court.