A shooting in Montenegro saw a gunman murder 12 people, including 2 children, before turning himself on.

Podgorica, Montenegro – A gunman who went on a shooting spree at a restaurant in southern Montenegro killed a total of 12 people, including two children, a prosecutor said Thursday.

“Twelve people were killed, two of whom were children,” prosecutor Andrijana Nastic told reporters in Cetinje, raising the previous toll of at least 10 from Wednesday’s attack.

The gunman died after being shot in the head, police said earlier Thursday.

The killing began around 5:30 pm local time (1630 GMT) on Wednesday in the village of Bajice near the southern city of Cetinje, according to police.

The victims were killed in five different locations, with the first four in the restaurant, the prosecutor said.

“Each place was inspected and evidence was taken. The actions of the prosecutor and the police are ongoing, to determine the circumstances in which the event took place,” he said.

Four people were also seriously injured and transported to a hospital in the capital, Podgorica.

The lives of three of them were still in danger, Health Minister Vojislav Simun said on Thursday.

The police dismissed a “clash between organized criminal groups”.

They said the firearms used were illegal.

The government has declared three days of national mourning from Thursday.

Mass shootings are rare in the small Balkan nation.