Part of the ring road in Huntingdon has been closed off by emergency services while fire crews tackle a large fire at a block of flats, understood to be the Elm Tree Court retirement complex. The blaze is believed to have started at about 10.30pm. Cambridgeshire police were also called to attend the scene. There are no details of any injuries at this stage but reports locally say residents have been evacuated. A spokesman for Cambridgeshire police said: Officers are currently assisting other emergency services at the scene of a fire in Cromwell Walk, Huntingdon. Please avoid the area. Specialist appliances have been called to the scene by firefighters, with crews appearing to tackle a fire in the roof of the property. Residents living near the scene have been told to stay inside and keep their windows shut by fire crews because of thick black smoke coming from the site of the fire.