British police arrested four people on suspicion of Iran-related spying on Friday, in relation to an investigation into surveillance of locations linked to Jewish communities.
According to the Metropolitan Police, the men, one Iranian and three dual British/Iranian nationals, were arrested last in a pre-planned operation.
“Today’s arrests are part of a long-running investigation and part of our ongoing work to disrupt malign activity where we suspect it,” Commander Helen Flanagan, Head of Counter Terrorism Policing London, said.
Jewish community asked to 'remain vigilant'
“We understand the public may be concerned, in particular the Jewish community, and as always, I would ask them to remain vigilant and if they see or hear anything that concerns them, then to contact us.”
Six other men have been arrested on suspicion of assisting an offender, Police said.
Reuters contributed to this report.