A man and a woman from Birmingham have been arrested on suspicion of possessing documents likely to be of use to someone committing or preparing an act of terrorism.
The two, a brother and sister aged 23 and 18, were arrested this morning in the Small Heath area of the city.
The arrests are said to have been pre-planned and police say they were not made in response to any threat to public safety.
Computers and other electronic devices which will undergo forensic examination.
Officers say a number of files need to be investigated, which is likely to take some time.
More top news
David Horne was managing director of Virgin East Coast Trains and was handed the same title at nationalised operator London North Eastern Ra
East Midlands Pollen Update: Very high
West Midlands Pollen Update: Very high