Emergency crews respond to possible explosion in Austin

A law enforcement source has told CBS News that there was a possible explosion Sunday at a house in southwest Austin. There are reports that possibly up to two people were injured.CBS Dallas/Fort Worth reports that the Austin-Travis County EMS have crews responding to the 4700 block of Eagle Feather Drive. They are also responding to reports of a second explosion in the 4800 block of Dawn Song Drive.FINAL: Critical Incident @ 4800blk Dawn Song Dr (correct incident address), Only 1 incident locat