“Technical hitches limited the death tolls in three suicide attacks in Saudi Arabia but the apparent coordination of the blasts suggests jihadis have the tools to sustain their bombing campaign. Three young Saudis detonated explosive vests near a Shi’ite mosque in Qatif last Monday, killing only themselves, while an attack by another young Saudi suicide bomber at the Prophet’s mosque in Medina killed four policemen.”
Source: Saudi Arabia’s new jihadists: poorly trained but hard to stop | Reuters