<span style="color: #222222;">A gunman has reportedly killed at least four people and injured one in the Australian city of Darwin. </span><br />'' <span style="color: #222222;">             </span><br />'' <span style="color: #222222;">Northern Territory Police said, a 45-year-old man has been taken into custody following the shooting and there are no further public threats. They said, the incident was not believed to be terror-related.<br />''</span><br />'' <span style="color: #222222;">National broadcaster Australian Broadcasting Corp. reported that a man fired a pump action shotgun at the Palms Hotel in the suburb of Woolner in the late afternoon.</span><br />''  <br />