A Northern Illinois explosion rocks a neighborhood. Two homes were destroyed as entire block was wiped off the map in Marengo. 50 more homes were damaged. No one was home in the residences that were destroyed. Four people were rescued from the second floor of a residence next door to the destroyed homes. Two people were treated for minor injuries and have been released from the hospital. The cause of the blast appears to be accidental. City officials are now warning of door to door home repair scam artists targeting the area.