A blaze at a Leicester electricity substation on Millstone Lane caused 260 homes to be left without power last night after an explosion due to an electrical fault.
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Fire crews were called to the substation, located inside a disused office block on Millstone Lane, at about 22:00 BST on Thursday.
Leicestershire Fire and Rescue Service said the fire was caused by a fault with the electrical switch gear in the electrical transformer.
Electricity has been restored to the homes. No-one was hurt.