A bulletin issued by three intelligence and law enforcement agencies warned of potential "copycat" attacks following the New Orleans attack on New Year's Day.

US officials are warning that Islamic State will try to use the deadly New Year’s attack in New Orleans to spur more acts of violence, even as they say there’s no sign the group directed the incident,

Montenegrin Prime Minister Milojko Spajic called the rampage a "terrible tragedy" and declared three days of national mourning.

Officials in Montenegro say a gunman who fatally shot at least 12 people including two children has killed himself while surrounded by police