In the ongoing debacle involving Iran, Britain and the USA, Iran has announced it has arrested suspected CIA spies and sentenced some of them to death.
The intelligence ministry said the suspects had been collecting information in the nuclear, military and other sectors.
US President Donald Trump has dismissed the Iranian allegations, saying they are “totally false”.
Washington and Tehran are at loggerheads over Iran’s nuclear programme and tensions have grown.
In a sign that the row with Iran is spreading geographically, the United States has sanctioned the China’s state-run energy company Zhuhai Zhenrong Co Ltd for allegedly violating restrictions imposed on Iran’s oil sector.
Iran’s foreign minister warned the West against “starting a conflict,” saying it was not seeking confrontation after its military seized the British-flagged tanker Stena Impero in the Strait of Hormuz last week.
Iran’s ambassador to Britain warned against escalating tensions, a day ahead of an expected response from the UK which could include fresh sanctions on Tehran.