Spanish police are investigating an explosion which ripped through a butcher's shop in Granada, Spain. The blast, which happened earlier this afternoon, injured seven people. The cause of the blast is not yet known, although it could possibly be a gas explosion. According to local media, three women aged 38, 52 and 60 have been taken to hospital following the blast in Durcal. Video from the scene posted on social media showed rescuers helping those injured in the blast. Emergency services have evacuated properties either side of the devastated shop. Of those hurt, at least one is serious. The 59-year-old woman is understood to be the owner of the shop. Her condition is critical. The explosion happened in the town of Durcal at about 5.10pm. Local police officers, the Civil Guard and fire crews rushed to the scene where a plume of black smoke filled the street. Two other women, aged 38 and 60 years, have also been transferred to the same hospital. All three women have suffered severe burns. The other five people were injured when there were walking past the butcher's shop. The emergency services have evicted the two-storey building where the explosion happened. An estate agency in the same block has been damaged. A police helicopter has been helping to airlift the wounded.