Officials say a small earthquake was recorded along the border of Mongolia and China.
The 3.9 magnitude earthquake was reported Wednesday at 6.17 p.m. in Ikh Uul about 18 km from center of Nomgon soum of South Gobi (Umnugobi) Province.
The magnitude is considered low intensity and was not felt in any urban areas.
The mini quake came on the eve of National Earthquake Awareness Day.