A smoke bomb has been thrown in the Ukrainian parliament amid protests over Kiev's extension of the lease on a Russian naval base in Ukraine.
Fighting also broke out after the speaker was pelted with eggs, but the debate continued and the chamber ratified the lease extension.
Thousands of protesters were reportedly gathered outside the building.
Kiev has prolonged the lease on the Sevastopol base by 25 years in return for cheaper supplies of Russian gas.
The clashes broke out in the Ukrainian parliament as it debated the ratification the deal.
After eggs were hurled at the speaker, he was shielded by two aides holding black umbrellas as the debate continued.
Deputies were seen throwing punches on the floor of the chamber, and covering their faces with handkerchiefs to protect themselves from the smoke.
Russian Prime Minister Vladimir Putin visited Kiev on Monday. Relations between the two countries have improved rapidly since the election of Ukraine's pro-Russian President Viktor Yanukovych in February.
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