 The brief fight took place near 15th and L Streets, northwest. Police say when 41-year-old Vivek Chander Taneja was struck, he fell to the ground and hit his head. He died five days later. The Washington Post reports that prosecutors informed police of their decision not to file charges because they say Taneja threw the first punch. Taneja was president and co-founder of Dynamo Technologies and a graduate of UVA, George Mason, and GW.