In the morning, the South first sent 11 seven-member teams for the onsite verification at 11 North Korean GPs. The teams crossed the Military Demarcation Line through newly built paths connecting their GPs to the North's posts.

They checked whether arms and troops were completely removed and if any underground facilities were left undestroyed.

In the afternoon, the North also sent 11 teams to verify the pullout of 11 South Korean GPs.

"The two Koreas' troops have made cross-border paths in the DMZ and are moving across the MDL peacefully. ... This is the first such case since the country's division," the ministry said in a press release.

"This clearly shows the will of the two Koreas' military authorities to implement their accord," it added.

Aside from the withdrawn guard posts, the Koreas are known to have some 200 such facilities in the DMZ. Their ultimate goal is to take down all of the guard posts and transform the buffer zone into a "peace zone." 

The Koreas' defense ministers signed the comprehensive military accord, which includes the withdrawal of 11 guard posts after the third summit between President Moon Jae-in and North Korean leader Kim Jong-un in Pyongyang.

The accord includes a series of confidence building and conventional arms control measures, such as disarming the Joint Security Area in the DMZ and setting up air, ground and maritime buffer zones to prevent unintended clashes. (Yonhap)