Wards on the Gledhow wing of St James's Hospital in Leeds were evacuated after the suspect was detained at around 5am on Friday.

The 27-year-old man was initially arrested on suspicion of firearms and explosives offences, but police later said he was re-arrested on suspicion of being concerned in the commission, preparation or instigation of acts of terrorism.

Army specialists and a bomb disposal unit attended the scene on Friday and a cordon was put in place as a precautionary measure.

"A vehicle and a number of premises" were being searched and counter-terror police are now leading the investigation.

A cordon remains in place as a precaution while specialist teams work at the scene, located about a mile from the city centre.

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The A&E department remains open and people were told to still attend outpatient appointments.

A patient on the respiratory ward told the Yorkshire Post that they had been moved out of their rooms into corridors and staff rooms.

The Leeds Teaching Hospitals NHS Trust confirmed that police had evacuated numerous wards on Friday morning and that a cordon would remain in place.

Detective Chief Superintendent Jim Dunkerley said: "This is being treated as an isolated incident and there is no evidence to suggest there is any heightened or ongoing risk to the public."