MPs from the opposition Vetevendosje (Self-Determination Movement) set off tear gas inside the parliament chamber on Friday, forcing lawmakers to evacuate.

They also set off gas in front of the parliamentary speaker’s office just before the start of Friday’s session.

These were the latest in a series of violent incidents in Kosovo sparked by the opposition parties’ anger at the recent agreement between Pristina and Belgrade.

“We are determined and will not yield until they [the government] annul the agreement,” Vetevendosje MP Glauk Konjufca told media.

Vetevendosje also accused parliament speaker Kadri Veseli of “barricading” the legislature because special police units were deployed outside the building in an attempt to prevent any repeat of the previous incidents.

The August 25 agreement between Pristina and Belgrade envisages the establishment of an association of Serb-majority municipalities in Kosovo to champion minority Serbs’ interests.

The three opposition parties in Kosovo’s parliament strongly oppose the association, claiming it will give Serbs too much power.

The opposition parties also want a border demarcation deal with Montenegro that they consider unacceptable to be withdrawn.

“Our protest within parliament will continue until the withdrawal of the agreement with Serbia and the demarcation with Montenegro,” Vetevendosje said in a statement.

Some of the party’s activists also demonstrated against the agreement outside parliament on Friday.

The opposition parties have been obstructing sessions of parliament in protest since the beginning of October.