as john harmon reports the sound of the explosion ripped through have m as old town. it blew up a big part, the front of the southern toga hotel, one of the most luxurious and expensive in the cuban capital. preliminary investigations indicate it was caused by a gas leak says the cuban president's office. movie stars and celebrities like madonna had stayed in the southern toga, now rescue workers and locals, a searching for people missing under the rubble. it was a blast that threw me out there. apparently it could have been worse. no tourist was staying at the hotel because it was undergoing renovations, said the have on a governor. president miguel dears canal arrived at the scene shortly after the blast. probably shortly. i. there's a group of people receiving help in rescue teamed the specialized emergency forces . we have debts unfortunately, the hospitals are dealing with the injured the explosion damaged other buildings around the hotel to there were worries, especially about a nearby primary school authority. say that thankfully the children and teachers there