4 children killed in fast-moving house fire in US

Authorities say a fast-moving fire in southwest Philadelphia today killed four children and burned through a number of adjoining homes.
Fire department officials say there is no immediate word on how many others were injured in blaze that destroyed eight homes in the row and engulfed a total of 10 houses.
Authorities tell AP the fire started shortly before 3 am local time and was brought under control an hour later. There is no immediate word on the cause.