- 4 updates
A controlled explosion has been carried out at a Peterborough engineering works following the discovery of an "unstable chemical".
The incident took place at the Perkins engineering site in the city.
The building in Frank Perkins Way was evacuated while a bomb disposal team from RAF Wittering dealt with the plan.
Police say there was no risk to the public and the plant has now reopened.
"A controlled explosion has been carried out on the unstable chemical found at Perkins engines and that has negated any threat posed by it," Inspector Kieran Mylchreest, from Cambridgeshire Police, said.
Mr Mylchreest previously described any risk to the public as "very, very low", and said any previous safety advice has been lifted now the incident is over.
Residents living close to the Perkins site in Peterborough are being urged to stay indoors while a controlled explosion is carried out on an unstable chemical.
The alert was raised at 1:30 this morning and staff were evacuated. A 500 metre cordon has been put up around the area. The controlled explosion is due to happen in the next half hour.
A 500 metre cordon has been put up around Frank Perkins Parkway in Peterborough because of an ongoing police incident. Roads around the area are closed and drivers are being warned to stay clear