A security alert at a Staffordshire hospital in which four men were arrested was not a terrorist-related incident, a local MP said today.
Stafford MP David Kidney said he understood there was "no substance" in the arrests made at the town's General Hospital under the Terrorism Act last night.
The Labour politician said: "I have spoken to police and now they've carried out their initial investigations, this isn't a terrorist incident and there's no substance in this particular incident.
"It was probably members of staff with a heightened state of awareness ahead of the Queen's visit tomorrow reporting something they thought was suspicious."
A spokeswoman for Staffordshire Police said the men were arrested under the Terrorism Act 2000 as a result of information received.
"They were arrested by officers from the force's incident management unit, which included some specialist firearms officers.
"The men are now in custody at police stations in Staffordshire."
Two sections of the hospital car park remained cordoned-off with police tape. A maroon Suzuki Baleno and a blue Citroen AX were still parked inside the cordon.
Meryl Keeling, spokeswoman for Buckingham Palace, confirmed a scheduled visit of the Queen to Stafford tomorrow would be going ahead as planned.
"As it stands, there is no change to the royal visit and the Queen will be arriving in Stafford tomorrow morning."