Wollaston recycling site fire cause 'unknown'
The cause of a large fire at a recycling centre remains unknown, the site's owners have said.
The fire was concentrated in the rear yard of the Think Green centre in Raymond Close in Wollaston, Northamptonshire, on Sunday.
People living near the site were advised to keep their doors and windows closed. No-one was injured.
An investigation into the cause of the fire is ongoing.
A spokesman for Think Green said the company's directors are working with Northamptonshire Fire and Rescue Service.
He said: "The cause of the fire remains unknown at this stage. The site was closed and non-operational at the time of the fire."
About 60 firefighters attended the blaze, which involved about 80 tonnes of plastic material. Crews from Buckinghamshire and Bedfordshire also attended the site.
Stuart Ridout, who lives nearby, said: "The flames were huge at one point".
BBC Northampton reporter Willy Gilder said the plume of smoke could be seen from Northampton, about 15 miles (24km) away.