South Yorkshire Fire and Rescue Group Manager Andy Hayter told ITV News Calendar the Asos warehouse blaze near Barnsley was probably caused deliberately, though investigations are still ongoing.
More top news
Rose Leslie and Kit Harington are to marry at Rayne Church in Aberdeenshire.
The star founded his most well-known band with his brother, Dimebag Darrell, in 1981.
Emmerson Mnangagwa was not hurt in the explosion and was evacuated, however, witnesses reported several others were injured.