Media reports say a gunman has killed at least four people in the Australian city of Darwin.

Northern Territory Police Duty Superintendent Lee Morgan says a 45-year-old man was in custody following Tuesday's shooting.

Morgan told Guardian Australia, "At this stage we've got reports of four deceased and a number of other people who have been shot."

Police contacted by The Associated Press declined to comment.

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.