On the fourth anniversary of the arrest of the “Iranian-British” citizen in Iran, Anoosheh Ashoori, the British Prime Minister and Minister of Foreign Affairs called on Iran to release the dual-national prisoner immediately.

"On the fourth anniversary of Anoosheh Ashoori’s wrongful detention in Iran, I reiterate my call for Iran to do the right thing and release him immediately," British Prime Minister Boris Johnson wrote on Twitter.

"Anoosheh and the other British nationals unjustly imprisoned in Iran must be able to return to their families in the UK," he added.

On Friday, British Foreign Secretary Dominic Raab tweeted that he was strongly urging the Iranian authorities to release Ashoori and other dual national prisoners.

"On the 4th anniversary of Anoosheh Ashoori’s detention, I call on Iran in the strongest possible terms to free Anoosheh, and all our dual nationals arbitrarily detained, so they can be reunited with their families. Their ongoing detention is totally unjustified," British Foreign Secretary Dominic Raab tweeted.

However, Iran’s Deputy Foreign Minister Abbas Araghchi replied to Johnson’s tweet, saying "UK tries to blackmail Iran by taking our OWN money- illegally kept for more than 40 years- hostage in exchange for prisoners. This is never going to work."

"We still have a deal. Time for UK to do right thing and stop letting US to sabotage humanitarian exchange," Iran’s Deputy Foreign Minister added.