Investigators seek cause of Texas blast that killed at least 12

WEST, Texas (Reuters) - Investigators searched for clues on Friday to the cause of a Texas fertilizer plant explosion that obliterated sections of a small town and killed at least 12 people, including volunteer fire-fighters who raced to the scene to douse a blaze.

There was no indication of foul play in the blast at West Fertilizer Co, a privately owned facility that authorities said had not been inspected in two years.