Fire department officials say a fast-moving rowhouse fire in southwest Philadelphia has killed four children, burned through a number of homes and displaced more than 40 people.
Officials say the blaze engulfed at least 10 houses, destroying eight of the rowhomes.
There was no immediate word on other injuries or the cause of the fire.
Officials say the fire started shortly before 3 a.m. this morning, and was brought under control in about an hour.
Fire Commissioner Derrick Sawyer calls it ``a tragic, tragic day for the city of Philadelphia.
The Red Cross says 42 people have been displaced by the fire.