Johari is blamed for having links with operatives in various countries including India, Laos and Sri Lanka, as well as having travelled to "occupied lands", the judiciary stated.
Johari also received two years in jail for accepting illicit funds and was ordered to pay that unspecified amount in fines, said Esmaili.
The Foreign Office said it had been supporting Mr Ashoori's family.
"This person. was identified by us because of her cultural infiltration in society through arts and her widespread activities", the judiciary spokesman added.
Ebrahimi who is now living in Germany said he and other inmates were released from jail after two years when another government body found out during an investigation that the case against them was fabricated by the Intelligence Ministry.
The new arrests have taken place in Iran while a heated debate is underway in the country over detaining innocent individuals and forcing them to confess according to the scenarios written by their interrogators.
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An Iranian supertanker was seized off the British overseas territory of Gibraltar on July 4 on suspicion of shipping oil to Syria in breach of European Union sanctions.
Other Iranian dual nationals jailed in Iran include Iranian-American Siamak Namazi and his father Baquer, who are serving 10-year sentences for espionage in a case that has outraged Washington.
She was jailed for ten years in May on alleged spying charges while visiting her grandmother.
She does not have British nationality.
Tensions had already been strained between the two sides over the fate of the British-Iranian Nazanin Zaghari-Ratcliffe who was arrested by Iranian authorities in 2016 as she was leaving Tehran.
She denies the allegations, insisting that the trip to Iran was a holiday, created to introduce her daughter to her Iranian family.
"Iran's security apparatus has apparently made the despicable decision to use these individuals as bargaining chips to resolve diplomatic disputes", she added.
The arrest of Iranians accused of espionage has increased since Supreme Leader Ayatollah Ali Khamenei said a year ago there had been "infiltration" of Western agents in the country.