Jalilian, who held a senior scientific role in the nuclear medicines field and had previously worked for the IAEA for about nine years, was arrested in August 2024.
His wife, Saeedeh Varesteh, said that he was convicted without access to a lawyer of his choosing and denied family contact for months.
“The court found him guilty of espionage for Britain and imposed a 10-year sentence,” Varesteh told Iran International.
Over the years, Jalilian made several trips to Iran to visit his family and attend scientific conferences, but “each time, he was summoned and interrogated by security agents at undisclosed locations, including some hotels in Tehran,” his wife said.
According to his wife, Jalilian attended a meeting just days before his arrest with Amirhossein Faghihi, then head of Iran’s Nuclear Science and Technology Research Institute, who was later killed in Israeli strikes during the 12-day war in June.
Varesteh said her husband told her he was “under intense pressure from security forces” in the days leading up to his arrest, though she did not specify what that pressure involved.