14 fire engines and 60 firefighters are still trying to bring a major fire under control at a recycling plant in Wellingborough.
Police are warning people to stay indoors and several roads have been closed.
More top news
Four people arrested in connection with the death of a man in Chelmsford have been released from custody.
A man has been arrested on suspicion of murder following the discovery of a body at a house in Victoria Gardens, Northampton
Fire has torn through retirement flats in Huntingdon - police helped the residents get out safely while 50 fire crews battled the flames