Boris Johnson is to raise the case of a British-Iranian mother jailed in Tehran with his Iranian counterpart at a summit in Brussels.
The international summit itself will focus on Iran’s nuclear deal.
But the foreign secretary will discuss Nazanin Zaghari-Ratcliffe’s case with Mohammad Javad Zarif when the pair meet for the second time in two months.
Mrs Zaghari-Ratcliffe, from London, has been held in a Tehran prison for 21 months on spying charges she denies.
Mr Johnson will attend alongside French foreign minister Jean-Yves Le Drian, German counterpart Sigmar Gabriel and EU high representative for foreign affairs Federica Mogherini.
He said he would use the opportunity to speak to Tehran foreign minister Mr Zarif about “all of our Iranian dual-national consular cases”.
Last month, Mr Johnson travelled to Iran to press for the release of Mrs Zaghari-Ratcliffe, who was arrested in April 2016 accused of plotting to overthrow the Tehran government.
Charity worker Mrs Zaghari-Ratcliffe, 39, maintains she was on holiday there to introduce her baby daughter Gabriella to her parents.
Mr Johnson was criticised for comments he made to a parliamentary committee in November that Mrs Zaghari-Ratcliffe had been training journalists in Iran – for which he later apologised.
Up to 30 dual nationals from Britain and other western nations are understood to be detained in Iran, including British-Iranian Kamal Foroughi, who was arrested in 2011.
Source » bbc