According to the Russian ITAR-TASS Agency, a 5.7-point earthquake hit the southern border-lying Tere-Khol district of Tuva on border with Mongolia at 08:00 local time (0100 GMT) on Monday.

The earthquake centred 100 kilometres from Kungur-Tug. No casualties or damage have been reported in this scarcely populated area, the chief duty officer of the Emergencies Ministry's branch for Tuva, Yuri Ardabayev, told Itar-Tass.

This is not the first quake in Tuva over the past 12 hours. On Sunday, at 23:23 local time (1623 GMT) the first quake measuring 5.5 on the open-ended Richter scale was registered in the western border-lying Bai-Taiga district, 80 kilometres from Kara-Khol.

Tremors were felt in the western city of Ak Dovurak (13,000 residents). They were virtually unfelt in Tuva's capital of Kyzyl (110,000 residents).