At least six people have been taken to hospital after an explosion destroyed a building in Leicester on Sunday night.

The British police said the cause of the explosion was not immediately clear; adding that there was "no indication" that the incident was terror related.

Police said they received the report at 7 p.m. local time Sunday and said "a number" of neighboring buildings on Hinckley Road were damaged.

BBC News reports that four people injured were listed in critical condition.

Authorities said "all emergency services" responded to the incident, which closed Carlisle Street and part of Hinckley Road. Businesses and homes in the area were evacuated and taken to a nearby police station as a temporary measure, police said.

Leicestershire Fire and Rescue Service said a two-floor building suffered a "pancake collapse," and said it was unknown if anyone was trapped inside.

Angel Namaala lives opposite the shop and told the BBC she heard "this big thud, like an earthquake".

She said: "The building had gone down and people were trying to help where they could by taking the bricks off. But the fire was getting bigger and bigger so people were told to leave the scene."

She said she and others helped a boy, believed to be aged about 15, who was hurt in the blast.