ANKARA, Turkey — A governor in Turkey said a liquified petroleum gas tank exploded at a petrol station, injuring 10 people at an adjacent supermarket in southeastern Turkey.Gov. Mustafa Toprak said Tuesday's blast occurred in Diyarbakir, the largest city in the country's Kurdish-dominated southeast, where Kurdish rebels have been waging war for autonomy for decades.Toprak ruled out terrorism and said the explosion was caused by a faulty gas valve.He said one of the 10 injured was in critical condition.