Small groups of ethnic Serbs in northern Kosovo have clashed with police while trying to block the entrance of municipal buildings to prevent recently elected officials from entering, according to local media.

Police fired tear gas and several cars were set ablaze on Friday

In response to the clashes, Serbian President Aleksandar Vucic said in a written statement carried on state-run RTS television that he put the army on a “higher state of alert”.

Vucic also said that he ordered an “urgent” movement of Serbian troops to the border with Kosovo.

The media reports also said that because of “violence” against Kosovo Serbs, Vucic demanded that NATO-led troops stationed in Kosovo protect them from the Kosovo police.