Bodies remain in London tower: fire chief

London's fire commissioner says it will be a miracle if any survivors are found following a devastating high-rise fire that killed at least 12 people. Authorities have said many more victims are expected.

Dany Cotton told Sky News that authorities don't expect to find anyone else alive after the blaze and that it's too early to speculate on how it started.

There were still "unknown numbers" of bodies in the tower block, she said.

Cotton says authorities have finally extinguished the last pockets of flame, and are trying to secure edges of the building for a fingertip search.