Downtown Madrid today evening was rocked by a Big explosion, the explosion happened in a building near a nursing home. Within minutes people started sharing videos and images of the explosion on social media and emergency services team reached the spot to take control of the situation.But the tricky part is that Spain hasn’t yet declared the cause of explosion, while there are speculations that it might be a terrorist attack, there are chances that it might be something like a gas cylinder blast too.Due to the confusion on cause of explosion ISIS has issued a statement saying they will wait till official announcement from Spain govt before taking any responsibility of the blast. Soon praises for ISIS’s honesty and integrity started flooding the social media. Details awaited.