Washington, Jul 17: A suspect in the killing of 25-year-old Indian student Sharath Koppu in Kansas City has been killed in an exchange of fire with the police, leaving three undercover officers injured, US authorities said on Monday. Koppu was fatally shot on July 6 in the back during a suspected attempted robbery at a restaurant where he worked in the US state of Missouri. The police officials on Sunday found the suspect involved in the shooting, but when two undercover officers conducting surveillance approached the man, he shot them with a rifle and fled, leaving both officers injured, Kansas City Star reported. That encounter touched off a series of gunfights between the suspect, whose name has not been released, and police. In all, three officers were injured and the potential suspect was killed, the report said.