"An explosion rattled Cleveland and its suburbs on Wednesday, destroying three houses, damaging at least 12 others and injuring at least 11 people, though none seriously, authorities said. The blast around 8 a.m. demolished an apparently unoccupied home, leaving a hole. Only the chimney was left of one adjacent home, and another had just one wall standing. Authorities evacuated the street where the explosion occurred, located on the city's east side, and were checking for leaking natural gas. City and federal authorities were trying to determine the cause of the blast. Fire Department spokesman Larry Gray said the injuries were minor, mostly burns. MetroHealth Medical Center said it received six adults and five children from the scene."