A 20-year-old man from Coventry has been arrested on suspicion of committing terror-related offences.
Officers apprehended the man under the Explosives Act on April 24 but had released him pending further investigation until Thursday's arrest.
West Midlands Police said he was arrested on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism after the examination of electronic items and documents which were seized from an address in Brookside Avenue, Coventry.
The property was subject to extensive searches for several days by West Midlands Police officers together with the Army’s Explosive Ordnance Disposal (EOD).
Chief Superintendent Mike O’Hara, from Coventry Police, said: “I would like to thank local people for their co-operation during the searches and apologise for any inconvenience caused.
“This is a complex inquiry that remains subject of a thorough investigation. The searches and evacuations were essential for officers and EOD to enable them to conduct their work and keep local people safe."
The man is being held at a police station in the West Midlands.