Six children are presumed dead after a house fire in Baltimore led to the structure collapsing in on itself Thursday morning. "This is a recovery effort at this point," Baltimore Fire Department spokesman Chief Roman Clark said. One of the childrens' bodies was pulled from the wreckage about 10:30 a.m. Firefighters are searching by hand to find the bodies of the other children. Four other people, including a woman and three children, were injured in the blaze but escaped before it collapsed. They are all in the hospital, and one of the children was in serious condition. Authorities have not identified the injured or dead.