York, Pa – Members of a York, Pennsylvania neighborhood are lucky to be alive after an explosion brought three houses to the ground this weekend. Officials say a natural gas leak may have been the cause, but they haven’t been able to determine the source.Five people were hurt and eleven others are displaced. Three other homes in the neighborhood were also damaged. It was three months ago that a gas leak led to an explosion that forced residents of an Allentown neighborhood out of their homes.