Provincial governments in China have imposed a 14-day quarantine period on people arriving from outside of the country, and in one instance locals boarded up the doors of a Korean neighbor.

According to Korean residents in China, the man had recently returned to his home in Hefei, Anhui Province after visiting Korea. When his neighbors found out they used wooden planks to nail his door shut. Photos of the incident spread on social media.

It is unclear why the mob barricaded him in but spared another Korean expat who had also just returned to Hefei.

There have been other reported incidents where Chinese people placed paper seals on neighbors' doors to make sure they comply with self-quarantine. Other vigilantes have kept guard over the homes of suspected carriers, while some neighborhoods have installed alarms that go off when the doors of such homes are opened.

The Korean victim called a coworker for help and the planks have apparently been removed.

At one apartment in Shanghai with a large number of Korean residents, tenants have been issued with color-coded entry passes to differentiate between foreigners and locals.