4 killed in Chevron UK refinery fire: Police

Four people have been killed in an explosion and fire at Chevron's oil refinery in southwest Wales, police said Friday.

The fire broke out after an explosion in a 730 cubic metres storage tank during maintenance, and damage was also caused to an adjacent storage tank, police said.

Chevron said an "incident" had occurred at the 220,000 barrel per day Pembroke refinery at 6:20 pm (1720 GMT) on Thursday, and that the fire had been extinguished.