A Sunday service in Grand Blanc, Michigan, turned into a scene of horrific chaos as a gunman drove his vehicle through the doors of a church and opened fire on worshipers. At least four people were killed and eight others injured in the deadly attack, while the church roof collapsed amid flames engulfing the holy site. Authorities have identified the suspect as Thomas Jacob Sanford, 40, who unleashed terror on congregants prior to the service. Emergency responders rushed to the scene as fire and gunfire created a deadly combination, leaving the community in shock. WATCH