Russian said on Thursday it hoped the Organization for Security and Cooperation in Europe (OSCE) will behave responsibly in resolving the crisis in Kyrgyzstan.

"We expect that the OSCE will behave responsibly, because a lot depends on what they say and how they put it," Russian Foreign Minister Sergei Lavrov told Russian Interfax. He added clear-cut criteria for appointing the OSCE mission heads should be worked out.

"We reiterate that their statements should be more careful," Lavrov was quoted by Itar-Tass as saying.

Lavrov also said Russia is seriously concerned about the situation in Kyrgyzstan and is closely watching events there. He urged all sides involved to settle the conflict by peaceful means.

Kyrgyzstan tumbled deeper into crisis on Thursday. President Askar Akayev and his family reportedly fled the country to Kazakhstan after opposition protesters seized control of main government buildings and the national television station in the capital Bishkek.

OSCE envoy to Kyrgyzstan Alojz Peterle, who arrived in the capital Bishkek on Thursday, said, "It would be good to create a provisional government of national unity so that there is time to move away from the streets and reach a provisional solution."

"If there is a political will to reach an agreement on so called government of national unity, then, of course, unity means different political lines, not just one," Peterle said.