Pennsylvania nursing home rocked by deadly explosion on Christmas Eve

A thunderous explosion Tuesday at a nursing home just outside Philadelphia killed at least two people, collapsed part of the building, sent fire shooting out and left people trapped inside, authorities said.

Pennsylvania Gov. Josh Shapiro said in a later news conference that emergency responders braved the flames, a heavy odor of gas and a second explosion to evacuate residents and employees.

Fire officials said they were in “rescue mode” five hours later, with responders still digging by hand and using search dogs...