BREAKING: Armed police surround house in Upton

A police armed response unit is attending an address in Northampton.

Police have surrounded a house in Upton and have been spotted in gardens in Knots Tiers Drive and Clover Street.

Armed Police in Upton this afternoon

Armed Police in Upton this afternoon

A police helicopter was hovering over the estate and half a dozen police vehicles were parked in nearby Walmer Close.

Northamptonshire Police have been contacted for more information.