I’d heard the Soviets often did this.
"In one of the most famous cases, in 2000, Kim Dong Shik, a missionary who was a permanent U.S. resident, was grabbed as he was coming out of a restaurant in Yanji, forced into a car and driven to North Korea. His wife, who lives in Skokie, Ill., said he is believed to have died in a North Korean prison.
What has the USA done about this?
Killed a dissident from Bulgaria in a similar way
Still do.