Four men from Derby, aged 22, 27, 35 and 36, a 27-year-old man from Burton and a 32-year-old woman from London have all been arrested on suspicion of engaging in the preparation of an act of terrorism.
Six properties in Derby, Burton and London are now being searched as part of the three force-strong investigation.
Derbyshire Police said: “We recognise that residents may have concerns as a result of these arrests and Safer Neighbourhood officers will be out in Derby as usual to speak to anyone who may have concerns.
Four of this morning’s terror arrests were made in Derby
We are grateful for residents understanding, patience and support while the searches are concluded.”