Four arrested in London on suspicion of spying on Jewish community for Iran
The Met say the arrests follow alleged surveillance.
Four men have been arrested on suspicion of spying on locations and individuals linked to the Jewish community for Iran.
The Metropolitan Police said the suspects, one Iranian and three dual British-Iranian nationals, have been taken into custody on suspicion of assisting a foreign intelligence service.
The force said the men, aged 22, 40, 52 and 55, were arrested at addresses in Harrow, Watford and Barnet shortly after 1am on Friday.
Commander Helen Flanagan, Head of Counter Terrorism Policing London, said: "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."
The Met said the arrests follow the alleged surveillance of locations and individuals in the Jewish community in London.
Searches are ongoing at the addresses where the suspects were arrested by counter-terrorism officers, as well as additional properties in Wembley and Barnet.
Six other men were also arrested in Harrow on suspicion of assisting an offender and have been taken into custody, the force said.