Russian Foreign Minister Sergei Lavrov told U.S. Secretary of State Rex Tillerson on Thursday that Russia was  preparing lawsuits to reclaim what Moscow says was illegally seized property in the United States, Russia’s Foreign Ministry said.

Lavrov told Tillerson in a telephone conversation that the actions of the U.S. authorities who ordered the removal of Russian flags from its seized diplomatic buildings in the United States were inadmissible, the ministry said. 

“It was stressed that the lawlessness continued by U.S. officials runs counter to declarations made at the highest level in Washington about intentions to normalize the bilateral relations, which have hit an all-time low,” the ministry said.