Eight men arrested in Derby under anti-terrorism laws have been freed without charge.
The men, all in their 20s and of Middle Eastern origin, were held in early morning raids on two houses in the city on Thursday.
The arrests were part of an ongoing operation and involved officers from Derbyshire and Metropolitan Police.
Officers conducted searches of the houses but found no weapons or toxic chemicals.
A police spokesman said: "The eight men arrested on Thursday under the Terrorism Act 2000 have been released from custody without charge."