A neighbor rushed to the aid of a family whose house exploded in Tracy over the weekend, charging into the burning home to save a baby. The mother and three daughters who lived there were badly injured. Neighbors said the woman told them she had lit a cigarette prior to the blast.

Four children were injured in a campfire explosion Friday night at the Money Creek Haven Campground in Houston. Authorities said the accident was caused by an adult who poured an accelerant on a smoldering campfire. A 4-year-old girl was airlifted to Regions Hospital in St. Paul, while the other three -- one by air -- were taken to a La Crosse, Wis., hospital.

A house about a mile north of Freeborn, Minn., exploded Friday afternoon, severely injuring a 75-year-old man. Fire largely destroyed the home. Investigators were probing what might have caused the blast. The house had recently been sold.

Peter Hansen, 67, had just mowed his lawn and ducked inside his Vergas home to take a shower, which might have been the safest place for him given what happened next. Hansen made a remarkable escape after an explosion brought his burning home crumbling down around him.