Three firefighters were injured when a natural gas leak caused an explosion and fire Monday at a New Hampshire mental health center, but the building's occupants all evacuated safely.
About 40 people were in the Greater Nashua Mental Health facility when someone called 911 to report an odor of gas, State Fire Marshall Sean Toomey said. Firefighters were still investigating when the explosion happened and part of the building began to collapse, said Nashua Fire Chief Steve Buxton. He said the three injured firefighters were taken to a hospital with non-life-threatening injuries.
