Explosion at a Pennsylvania nursing home kills at least 2, governor says

Pennsylvania's governor says an explosion at a nursing home just outside Philadelphia killed at least two people. The explosion Tuesday collapsed a part of the building and happened just as a utility crew had been on site at Bristol Health & Rehab Center in Bristol Township looking for a gas leak. The extent of the casualties was unclear several hours later. Bucks County officials say a portion of the building collapsed. Fire officials said they were in “rescue mode” five hours later, with rescuers still digging by hand and using search dogs, earth-moving equipment and sonar to locate potential victims.