A fire has broken out at a former industrial site in a Suffolk town. 

Thick smoke has been spotted at the Delphi facility in Sudbury's Newton Road on Tuesday evening.

An eye-witness counted four fire engines at the scene, although Suffolk Fire and Rescue Service's online tracker says as many as 16 appliances were in attendance.

The crews were from Sudbury, Long Melford, Hadleigh, Woodbridge, Ixworth, Bury St Edmunds, Colchester, Haverhill, Clare and Halstead fire stations.

East Anglian Daily Times: The building is currently 20pc involved in fireThe building is currently 20pc involved in fire (Image: Newsquest)

Suffolk Fire and Rescue Service has confirmed crews are on-scene of the ongoing incident.

It is unclear what has caused the blaze.

East Anglian Daily Times: 16 appliances are currently on scene16 appliances are currently on scene (Image: Newsquest Staff)

Suffolk Fire and Rescue Service has confirmed it is a building fire in a derelict factory, which is approximately 100mx100m and 20% involved in fire.

A cordon has also been put in place as police have arrived in the area, an eye-witness at the scene reported.

Delphi Diesel Systems closed in mid-2020, causing hundreds of job losses.

The American-owned conglomerate behind the site decided to move the manufacturing operation - which made diesel fuel injectors and filters for commercial vehicles - to Romania in eastern Europe.

East Anglian Daily Times: Police outside the Sudbury sitePolice outside the Sudbury site (Image: Newsquest)

In March this year, a gas leak was reported as coming from the site.

Suffolk police said officers were investigating the incident and appealed for information relating to a break-in.

This is a breaking story, updates to follow.