The U.S. Department of the Treasury sanctioned North Korean and Russian firms on Thursday for allegedly exporting “forced labor” from the DPRK.

In a press release published on Nov. 19, the Treasury Department said that firms operating in Russia were also newly designated for allegedly helping “generate revenue” for the North Korean government, which is in violation of existing U.S. and U.N. sanctions.

The two designated firms are a Russian construction company called Mokran LLC and a DPRK company called Korea Cholsan General Trading Corporation.

“North Korea has a long history of exploiting its citizens by sending them to distant