Moscow (CNN) -- An earthquake with a preliminary magnitude of 6.6 struck a sparsely populated region of southeastern Russia on Tuesday, the U.S. Geological Survey said.
The quake rumbled a part of Russia near its border with Mongolia. Its epicenter was about 60 miles east of the Russian city of Kyzyl and 210 miles northeast of Ulaangom, Mongolia, the Geological Survey said.
The earthquake was relatively shallow, with a depth of four miles.
The Russian Emergency Situations Ministry said it was sending a team of experts to assess the situation.
The quake caused no damage or casualties, a regional ministry spokesman told state-run news agency RIA Novosti.
A spokesman for the MRSK Siberia power company told the news agency there had been no disruption to power supplies.
CNN's Maxim Tkachenko contributed to this report.