Ten North Koreans believed killed in bus accident near Kaesong Industrial Complex

So says Yonhap:

The collision took place Friday evening at an intersection in the Kaesong industrial park where about 120 South Korean firms employ 42,000 North Koreans to produce labor-intensive goods, a police official in the South Korean border city of Paju said.

Citing South Korean witnesses, the official said that a bus carrying commuters hit another on the side amid heavy rains but no South Koreans were aboard the buses.

"The case was reported by South Korean workers traveling to and from the Kaesong complex," the official said, declining to be identified. "The exact number of casualties and how the accident happened have not been ascertained."

Unification Ministry spokeswoman Lee Jong-joo in Seoul said North Korean authorities quickly cordoned off the scene of the collision and were seen bringing casualties out of the buses.

"The authorities prevented others from approaching the scene, which made it difficult for our side to determine the number of casualties and the cause," she said in a press briefing.

Such secretive behavior in the face of a negative incident should give pause to anyone working in the Kaesŏng complex. With the site made off limits, how would the South Korean side even know if a ROK national were involved?