Witnesses have reported hearing a series of explosions at a industrial site in the Derbyshire town of Belper.
Pictures circulating on social media show billows of black smoke above the site.
More top news
The son Cecil the lion, whose 2015 killing prompted an international outcry, has also been fatally shot during a hunt.
Thickening cloud and rain stalling across Wales and southwest England through tomorrow
A parole board in Nevada, USA, decided that the 70-year-old former football, TV and movie star can be released in October.