Opposition supporters threw gas canisters to try to disrupt the inauguration ceremony for the new president, Hashim Thaci on Friday.
The canisters were released before the start of the ceremony at Pristina’s main Skanderbeg Square.
The opposition supporters who threw the canisters were scattered in small groups surrounding the chairs for the guests, before all of the guests arrived.
An Associated Press television crew saw five or six supporters being detained by the police while the others were pushed away.
The main opposition Self-Determination Movement Party claimed responsibility for the incident, broadcasting a short video of the action on its Facebook social media site.
The ceremony went ahead without any disruption.
Thaci, 47, assumed his post on Thursday in a swearing-in ceremony at parliament.
The opposition boycotted that, as well as the vote on 26 February, which it also tried to disrupt with tear gas.
The opposition has been disrupting the chamber since last September to protest a deal between Kosovo and Serbia that gives more powers to ethnic Serbs in Kosovo and another on a border demarcation pact with Montenegro.