INVESTIGATIONS will be carried out to find out the cause of the blaze at a Kidderminster factory.
The fire has now been put out at the Roxel site and people who have been evacuated from their homes are now able to return.
Fire crews have been working inside the affected building using breathing apparatus to ventilate it, since the blaze started at about 8.30am.
The A449 was closed from the Hoobrook Island through to Black Bridges, while firefighters tackled the blaze.
A phased reopening of the roads and lifting of cordons began at about 2.45pm after it was confirmed the fire was out. No-one was hurt during the incident.
Superintendent Kevin Purcell of West Mercia Police said: "Well rehearsed multi-agency plans were put in operation to deal with this incident and in fact an exercise took place at the site this week.
"On-site safety procedures ensured that this incident was dealt with quickly and in a highly professional manner with very little risk to the public.
"Our first priority was to ensure people's safety and I am sorry for the disruption caused by the road closures and evacuations.
"The Emergency Services and our partners have been working hard to ensure that normality is restored as soon as possible and we are grateful to the community for their assistance and patience."