India, Dec. 24 -- Significant damage has been reported at the Silver Lake Nursing Home in Bristol, Bucks County, Pennsylvania, following an apparent gas explosion that caused a partial building collapse. Multiple people are believed to be trapped inside. Authorities have not yet released information on the number or condition of any victims.

According to ABC6, the explosion occurred around 2:15 p.m. Tuesday at the Silver Lake Nursing Home, located in the 900 block of Tower Road in Bristol Township.

Upper Makefield Township police have classified the situation as a mass casualty incident. Officials are urging the public to avoid the area due to the large and ongoing emergency response.

Videos circulating on social media show extensive s...