Seoul

Recent satellite imagery suggests that work to repair North Korea's main nuclear test site in Punggye-ri may have been suspended due to flood damage.

The satellite imagery, taken on August 23, showed no significant activities at the Punggye-ri nuclear test site, according to Beyond Parallel, a project of the Washington-based Center for Strategic and International Studies think tank.

"Road construction to Tunnel No. 4 remains suspended, and flood damage to the facility's sole access road is observable, both likely a result of the heavy rains during the past two months," it said on Monday.

North Korea voluntarily dismantled the Punggye-ri site in 2018 to show its willingness to de-nuclearise to the international community.

It, however, is believed to have begun repairing the Punggye-ri facility, the site of its all six nuclear tests so far, earlier this year.

Officials in Seoul and Washington have said the North may have completed all preparations for a nuclear test and the country may conduct its seventh nuclear test "at any time".

ALSO READ: Iraq: Death toll in clashes rises to 20

Pyongyang conducted its sixth and last nuclear test in September 2017.