MONTENEGRO declared three days of national mourning at the weekend, after 10 people, including two children, were killed in a daylight attack by a 34-year-old gunman on Friday.

The attacker used a hunting rifle to first shoot to death two children, eight and 11, and their mother, who lived as tenants in his house in the western city of Cetinje’s Medovina neighbourhood.

He then walked to the street and shot 13 more people at random, seven of them fatally. The gunman was shot dead later after a gun battle with police.

Police investigating the rampage issued a statement on Saturday saying it was still unclear what motivated the gunman — identified only by his initials, VB.

But they said people close to the attacker said he had recently started exhibiting a “change in behaviour but nothing that indicated he could commit such a crime.”

The attacker had an appointment to see a mental health care specialist but went on a killing spree prior to it.