A British-Iranian charity worker jailed for espionage in Iran has to return to prison after a three-day release expired, her husband said Sunday, according to the Press Association.

British foreign minister Boris Johnson arrived on Saturday in Iran, where he is expected to lobby his Iranian counterpart Mohammad Javad Zarif for the release of jailed Iranian-British aid worker Nazanin Zaghari-Ratcliffe.

Iran's Supreme Court has upheld a five-year jail sentence for a British-Iranian charity worker who was convicted on unspecified charges relating to national security, her husband said on Monday.

The family of British-Iranian aid worker Nazanin Zaghari-Ratcliffe, who has been sentenced to five years in jail in Iran on undisclosed charges, said she has been accused by a Revolutionary Court of acting against national security by cooperating with the BBC.

A British-Iranian aid worker, Nazanin Zaghari-Ratcliffe, detained since early April and accused by hardline Revolutionary Guards of trying to overthrow Iran's government has appeared in court for the first time, her family said on Tuesday.

Iran on Wednesday accused a British-Iranian woman arrested in April of seeking to overthrow the Tehran government, an allegation dismissed by her husband as "complete nonsense".