Four men have been arrested at addresses across West Yorkshire and the Midlands on suspicion of terrorism offences, police have said.
The suspects, who are aged 31, 33, 34 and 49, were all taken to local police stations for questioning on Friday.
They were each detained on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism under Section 41 of the Terrorism Act 2000.
A spokesperson for Counter Terrorism Policing North East said searches were ongoing at a “number of properties”, but there was not believed to be “any imminent threat to the public in the UK”.
The men arrested were a 31-year-old from Huddersfield, a 33-year-old from Leeds, a 34-year-old from Derby and a 49-year-old from West Bromwich.
Officers added the arrests were “pre-planned and intelligence-led”.
