Unknown people have threatened explosions at the embassies of Armenia and Belarus in Moscow, demanding the withdrawal of troops from the territory of Kazakhstan, TASS reports citing a law enforcement source.

"It was revealed yesterday that a letter with threats of explosions was sent to the e-mail addressed of the embassies of Armenia and Belarus. Unknown persons demanded that the troops of the countries be withdrawn from the territory of Kazakhstan," the source reportedly said.

According to the source, the buildings were searched, no explosive devices or bombs were found.

Almost immediately after Kazakh President Kassym-Jomart Tokayev asked for help, the CSTO decided to deploy a peacekeeping contingent in Kazakhstan, with Armenia sending 100 troops to Kazakhstan as part of the contingent.

Throughout the mission, the Armenian peacekeeping unit will only protect buildings and infrastructures of strategic importance, the Defense Ministry said.