News cloer. Welcome to the overnight news. Im elaine quijano. A makeshift memorial continues to grow in dallas, where five Police Officers were killed by a sniper last thursday. We learned today the gunman taunted police during two hours of negotiations before authorities killed him with a robot bomb. The killer said he was targeting police in revenge for the Fatal Police Shootings of two black men in minnesota and louisiana last week. Those deaths led to tense protests and dozens of arrests in st. Paul and baton rouge last night. We begin in dallas with manuel bojorquez. Reporter after the initial rounds of gunfire, Dallas Police chief david brown said in an interview today the gunman laughed at Police Negotiators and scribbled letters on a wall with his own blood, and that micah Zavier Johnson put his Army Training to use killing Police Officers, killing five and turning parts of dallas into a war zone. 25year Dallas Police veteran james depugh rushed to the scene. It was painful see