Two individuals were arrested in London on suspicion of assisting Iran's intelligence service, the Metropolitan Police announced.
A 60‑year‑old man and a 42‑year‑old woman were taken into custody at addresses in the city on Wednesday as part of an investigation into alleged violations of the National Security Act.
The suspects, detained on suspicion of aiding a foreign intelligence service, have since been released on bail subject to strict conditions, the force said.
Police emphasized that the arrests are not related to any of the incidents or attacks involving Jewish and Iranian communities in London earlier this year.
The detentions followed two searches carried out at premises in north and north‑west London in June, the Metropolitan Police added.
Commander Helen Flanagan, head of Counter Terrorism Policing London, said she knows "news of these arrests volition travel arsenic a interest to immoderate members of the public" but stressed she does "not judge determination to beryllium immoderate imminent menace to the wider public".
She added: "We've seen a marked summation successful the tempo of our enactment linked to nationalist information and authorities threats implicit the past twelvemonth and this probe is simply a continuation of that."