People were evacuated from their homes after a serious fire broke out in a factory building in Leicester.
Emergency services were called to the blaze in Bridge Street, North Evington, at about 17:25 GMT on Thursday.
About 40 firefighters worked to extinguish the flames using hose reel jets.
Leicestershire Fire and Rescue Service said 10 houses in the immediate area were evacuated to keep residents safe as they tackled the blaze.
Other locals were advised by police to keep their windows and doors closed.
Road closures in Rolleston Street, Bridge Road, Leicester Street and Baggrave Street remained in place on Friday afternoon.
The fire service said the scene would be examined by forensic officers and fire examiners to determine the cause and establish if there were any suspicious circumstances.