Czech Foreign Minister said the deportation of 20 diplomats was tougher by Russia than predicting and calling for solidarity from the EU.

"The Russian reaction is stronger than what we expect, when the number of diplomats is required to leave Russia more than the intelligence officers who are expelled. I will meet the Prime Minister and discuss additional measures

Czech officials also called on Foreign Minister of European Union members (EU) to show unity.

Czech diplomat cars leave the Embassy in Moskva on April 19.

Russian Ministry of Foreign Affairs Yesterday Trieu Ambassador Czech Vitezslav Pivonka to announce the decision to expel 20 embassy employees and ask them to leave Russia before April 20, responding to the decision to expel 18 Russian diplomats

Russian Foreign Ministry spokesman Maria Zakharova criticized the Czech government without sharing information about the explosion investigation.

The Kremlin also released a release that acts to expel 18 Russian diplomats as "aggressive and goodwill".

Prime Minister Czech Andrej Babis on April 17 spoke directly on television on "suspects that have the basis that officers of the Russian Army intelligence agency are relevant in the bullet warehouse explosion in the VRBETICE area."

Foreign Minister Hamacek then announced that 18 employees of the Russian Embassy were asked to leave within 72 hours.

The US Embassy in Prague announced on Twitter that Washington "always approached with the first ally as one. We appreciate the Czech action of Czech, forcing Russia to pay for the danger in the Czech territory".