Gunman shoots sister, mom dead, sets Philly home ablaze before killing himself during 12-hour standoff on city bus: cops

Source: New York Post

A Philadelphia man gunned down his mom and sister, set their home on fire and then barricaded himself inside a city bus during an hours-long standoff with authorities that only ended when he turned the gun on himself, according to police and reports. The shocking rampage began in the early morning hours Monday when emergency responders rushed to a house fire in the Cedarbrook neighborhood around 3:40 a. m.