Massive Blast At Russian Factory Near Moscow; Mushroom Of Smoke Rises, Several Feared Trapped

A powerful explosion rocked a factory in the town of Sergiyev Posad, outside of Moscow. Videos on social media show a cloud of smoke rising from the factory. The videos show windows shattering in buildings nearby the factory. The incident took place on the territory of the Zagorsk optical-Mechanical plant. Moscow Region's Governor said that 43 people had been taken to a local hospital. Watch the video for more.