PRISTINA, Kosovo (AP) — Despite security checks at the entrance, Kosovo opposition lawmakers on Friday again used tear gas to block work from being done in Parliament to pressure the government into renouncing deals with Serbia and Montenegro.

The session was temporarily suspended after a tear gas canister was launched from opposition lawmakers' seats. A resumed session an hour later was suspended again for the same reason.

After the use of the tear gas for the third time, speaker Kadri Veseli, himself wearing an anti-gas mask, could not keep his governing lawmakers from leaving the hall due to the gas. Then police forcefully brought out all opposition lawmakers. One of them, Albulena Haxhiu, fainted after being pushed back by police.

Since September, the opposition has disrupted Parliament with tear gas, pepper spray, whistles and water bottles. They reject a deal between Kosovo and Serbia, reached last year, which gives more powers to ethnic Serbs in Kosovo. They are also against a border demarcation deal with Montenegro.

Opposition lawmakers say they are determined not to allow normal operations at the Parliament, demanding the government's resignation and fresh elections. The government accuses the opposition of trying to come to power through violence.

Police said they detained three opposition lawmakers and three other people Friday for illegal possession of tear gas canisters.

The session resumed successfully at the fourth attempt, but without the opposition lawmakers, who denounced the decision to expel them as illegal.

In December, Kosovo's Constitutional Court decided that part of the deal with Serbia was not in line with the constitution.

Kosovo's Western backers have denounced the violence, calling on the opposition to resolve the political crisis in Parliament. U.S. Ambassador to Pristina Greg Delawie said Friday he was "disgusted" by the actions of Kosovo opposition leaders.

Kosovo's 2008 independence has been recognized by 111 countries, including the U.S. and major European Union nations. But it is rejected by Serbia, with support from Russia, which has blocked Kosovo from becoming a U.N. member.

Kosovo and Serbia are holding EU-mediated talks to try to overcome their differences.

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Gresa Kraja in Pristina, Kosovo, and Llazar Semini in Tirana, Albania, contributed to this report.