Northampton Armed Siege
Armed officers were called to Derngate after reports that shots had been fired inside a flat at Bedford Mansions.
The town-centre siege began just after midday when someone inside the flats heard the sound of gunfire and called the police.
Armed officers then surrounded the building and nearby roads were closed off.
The stand-off was eventually ended just after seven pm when a man was arrested and led from the building.
Police say he is being held on suspicion of firearms offences and causing criminal damage.