Saudi security forces have defused a bomb in a residential area of Riyadh, Saudi officials have said. The device was found next to a petrol station on Sultana Street, news agencies reported, although one source said the bomb was a hoax. Dubai-based al-Arabiya television said the bomb was aimed at an electricity distribution unit in the area. The alert comes amid a crackdown by Saudi authorities on Islamic militants, who have carried out several bombings. Saudi police sealed off the area as bomb disposal experts dealt with the device, Saudi sources said. Full Story