Russia's President Vladimir Putin has voiced strong concern about Mongolia's plans to build a hydroelectric plant on a river flowing into a lake in Siberia.

Putin, speaking during a meeting Thursday with leaders of China and Mongolia in Uzbekistan's capital, Tashkent, said that the prospective China-funded dam on the Selenga River would threaten Lake Baikal, the world's deepest lake. He suggested that Russian power plants could increase electricity supply to Mongolia instead to meet its energy needs.

The hydropower plant project has also drawn criticism from environmental groups.

Putin met with Chinese President Xi Jinping and Mongolian President Elbegdorj Tsakhia on the sidelines of a two-day summit of a security alliance dominated by Russia and China.

The three leaders also discussed a transport corridor and other infrastructure projects.