A Russian official said Moscow might demand compensation from the U.S. government for blocking off access to two diplomatic compounds late last year as part of the sanctions imposed against the country for meddling in the 2016 elections.

Russian agents were expelled from the two U.S. locations on December 29 of last year, when then-President Obama levied sanctions on Russia. In a statement, Obama said the compounds were “used by Russian personnel for intelligence-related purposes.”