An explosion has taken place on Thursday in a building in Istanbul's Gaziosmanpaşa district, in which 10 people have reportedly been injured, according to reports. The explosion has been caused by a gas leak, the initial reports have said. Meanwhile other reports indicated that an industrial propane tube had exploded in a hardwood production facility, which injured 10 people.Ambulances and fire fighters were dispatched to the scene as the injured workers were taken to the nearby hospitals.