A HUGE blaze which sparked an explosion and caused more than £700,000 of damage at a supermarket was started deliberately.

Police said investigations are continuing into the major fire in Glasgow, which was started when thugs set a pile of rubbish ablaze.

Emergency services had to create an exclusion zone around the blaze at the Tesco store in Shettleston.

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The fire was reported at 1.15pm on Wednesday after the flames spread to the store's electrical units and caused an explosion.

Detectives said the blaze caused more than £700,000 worth of damage and are now hunting for those responsible.

The rubbish had been piled up against a fence behind the Tesco store, between Old Shettleston Road and Cockenzie Street.

Scores of homes in the area were also left without power after the blast.

Police believe a group of schoolchildren who were spotted near the scene, may hold clues about the fire.Detective Sergeant Colin MacRitchie, Shettleston CID, said: "Our enquiries so far have established that there were a number of pupils from a nearby school, in the lane at the time, during their lunch break.

"They may have seen someone setting the fire or acting suspiciously."

DS MacRitchie added: "On this occasion, no one was hurt, however, a number of homes in the area were without power for two hours as a result of this reckless act."

He said the fire caused hundreds of thousands of pounds worth of damage.