At least 4 killed in gun rampage in Australia

A gunman was arrested after killing four people and wounding several others on Tuesday in the northern Australian city of Darwin.
Prime Minister Scott Morrison said a suspect was in custody.
"This is a terrible act of violence that has already, I'm advised, taken the lives of four people," Morrison told reporters in London, where he was on a visit to take part in D-Day commemorations.
"Our advice is that this is not a terrorist act. There is nothing to suggest that that is the case whatsoever." Four men have been killed and one woman wounded, police said.