Authorities in southern city of Asaluyehin say oxygen pipeline exploded; no immediate word on cause

Temblor centered at port city of Bandar Genaveh, some 100 kilometers from Bushehr nuclear plant; 5 people said injured, as footage emerges of damaged houses

Iranian news agency doesn't say what started the blaze in Bushehr, the province housing the Islamic Republic's only nuclear plant

No reports of damage to Bushehr facility following 4.5 magnitude quake in area, the second temblor in 2 weeks

No immediate reports of damage or injuries in tremblor in Bushehr region

In presence of journalists, authorities pour concrete for the base of Russian-funded facility

Move allows Russia and European nations to continue work at nuclear sites without incurring US penalties; 2 waivers relating to heavy water and uranium enrichment not extended