khobar saudi arabia bahrain say explosion cause fire main oil pipeline friday cause terrorist sabotage link unprecedented attack arch-foe iran deny role gulf island kingdom unrest key western ally host u.s. fifth fleet sunni muslim-ruled bahrain years grapple protest sporadic violence come shi ite majority incident act sabotage dangerous act terrorism aim harm high interest nation safety people interior ministry say website terrorist act witness country recent period carry direct contact instructions iran statement quote interior minister sheikh rashid bin abdullah al-khalifa say tehran foreign ministry spokesman bahram qassemi reject allegations false talk childish accusations ministry say website bahraini authorities say bring control fire oil pipeline state-run bahrain petroleum company bapco close flow oil stricken pipeline civil defence say statement early saturday residents close incident near buri village 15 kilometres 10 miles capital manama evacuate safe shelter statement add saudi arabia energy ministry say pump bahrain suspend kingdom step security precautions facilities attack pipeline ... follow suspension pump oil state bahrain saudi ministry energy industry mineral resources say ministry energy also confirm increase security precautions facilities facilities enjoy high level protection safety add statement authorities quash shi ite-led arab spring protest 2011 militants launch deadly bomb shoot attack security force manama blame tehran iran deny role bahrain unrest bahrain rely abu safa oilfield majority oil share field saudi arabia oil bahrain transport via 55 km a-b pipeline capacity 230,000 barrel per day bpd new 350,000-bpd oil pipeline two countries complete next year serve plan expansion bahrain refinery capacity arabian light crude oil flow saudi aramco abqaiq plant via 115-km new pipeline 73 km run overland rest gulf bahrain call pipeline blast 'terrorism link iran