Several gas cylinders kept in a basement blew up, damaging the building and injuring a resident There have been several explosions around Iranian military, nuclear and industrial facilities since late June DUBAI: A gas explosion shook a residential building in Iran"s capital Tehran on Saturday, injuring one person, the semi-official ISNA news agency quoted the city fire department as saying. Several gas cylinders kept in a basement blew up, damaging the building and injuring a resident, a fire department spokesman told ISNA. There have been several explosions around Iranian military, nuclear and industrial facilities since late June.