Clouds of tear gas filled Kosovo's parliament in Pristina during a protest by opposition deputies who smuggled gas canisters past security guards and into the chamber.
It was the second time in two weeks that opposition lawmakers released tear gas to disrupt a parliamentary session.
Outside the parliament building on October 15, protesters rallied to support the opposition leaders.
The repeated protests are a response to a landmark deal, brokered by the European Union, to normalize relations between Kosovo and Serbia.
Opposition supporters believe the move will increase Serbia's power in Kosovo and deepen ethnic divides.
The opposition, led by the Self-Determination party, said no more parliamentary sessions should be held, pledging to continue the protests.
"Insistence on that will be a provocation and escalation of the situation in the Republic of Kosovo," said a three-party opposition statement.
