BREAKING NEWS: Armed police storm house in Northampton
Armed officers have been seen entering a building near the centre of Northampton.
Semilong Road is currently closed off while a team of police surround a property on the corner of St Paul's Road.
Eyewitnesses have described officers entering a building and detaining around six people at around 4.30pm.
Up until a short time ago, four police cars were stationed outside the building.
Updates to follow.