RIYADH — A Pakistani and an Indian national were killed when an air pump exploded in a factory in southern Riyadh. Saudi Red Crescent spokesman Mazen Al-Ghamdi said the operations room received a notification of the accident and they initially suspected it was due to a gas cylinder explosion. Four Red Crescent rescue units were rushed to the scene where they discovered that an air pump inside a paper manufacturing unit had exploded, killing two of the workers. No other injuries were reported and the bodies of the victims were taken to the mortuary.