Mongolia has recorded its first domestic coronavirus transmission following hundreds of imported cases, the country's health minister said during a briefing.

Minister Munkhsaikhan Togtmol said a woman in Ulaanbaatar had been infected by her husband, a truck driver delivering goods from Russia who tested positive after 21 days in quarantine.

According to Reuters, another 24 people in close contact with the couple have been put in isolation.

Authorities have ordered a three-day lockdown in Ulaanbaatar, with schools also closed.