Four people are critically injured after an explosion in Leicester in the UK.

A convenience store has been completely destroyed in a massive explosion with emergency services rushing to the scene, the Daily Mail reports.

Photos shared online showed the store had completely disappeared with flames engulfing the wreckage.

Leicestershire Police tweeted: "There has been a major incident on Hinckley Road, Leicester. All emergency services are currently dealing with this. Carlisle Street and part of Hinckley Road have been closed Please avoid the area."

This footage shows the aftermath of an apparent explosion in the Hinckley Road area of Leicester. Police have declared a "major incident." More information as we get it. pic.twitter.com/ghVIGEYjdk

— BBC East Midlands (@bbcemt) February 25, 2018

The cause of the explosion is unclear at the present time but it is being treated as a major incident.

According to reports, the explosion took place at Western Park Store, a Londis store on the street with a bus stop in front of it.

A video, shared on Facebook shows police reacting to the explosion.

Photos show that the store has been completely destroyed in the blast, with flames engulfing the wreckage.

#BREAKING: A huge blast has rocked the British city of #Leicester pic.twitter.com/jrVNQ3K49M

— ِEْnُzْo | ْعَبَّاس (@EnzoOfficialRAP) February 25, 2018

People nearby took to Twitter to express their shock, with one user writing that their entire house "shook" after the blast.

User Applepearmama said: "Not too many details at the moment, speculation of a gas explosion - possibly some hurt, nothing confirmed. My whole house shook though - it was a huge blast whatever caused it."

People gathered in the streets as emergency services tackled the fire.

A nearby resident told the Leicester Mercury that the blast was "pretty frightening".

"At about 7pm, we heard an absolutely massive explosion. It was pretty frightening.

"We went to look out of the upstairs windows and saw loads of smoke, and then a few seconds later massive orange flames."

People gathered in the streets as emergency services tackled the fire.