A UK police source has this evening that a person has been apprehended in what is believed to be connected to the search for fugitive Raoul Moat.
Locals said the police activity was centring on allotments near Rothbury town centre where a man fitting Moat's description was spotted last night.
As armed police swamped the area an ambulance arrived and made its way to the river side.
There was no one on the streets apart from police officers standing guard on the eastern approach road to Rothbury.
A security cordon of officers and vans stopped traffic entering the town from the east side while five police vans in convoy drove past with sirens blaring.
Juliette Ballantyne, from Whitton View, said she had seen snipers down by the river.
Mrs Ballantyne, who lives to the east of Rothbury town centre, said: “I am nervous. My mother in law lives nearby. I hope she’s OK.”
Mark Dennett of Northumbria Police tonight warned residents of Rothbury to “stay inside for your own safety” as a major police operation got under way in the town.