Iran says it has arrested 17 spies who it says were working for the CIA, 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.

Mr Trump last year abandoned the international nuclear deal with the Iranians, and the US has imposed sweeping economic sanctions on them.