Today the Alliance will hold an urgent meeting to discuss the implications of the poisoning of Alexei Navalny with Novichok.
The Brussels headquarters of the North Atlantic Council announced it yesterday afternoon.
German officials will brief the other 29 allies, after Berlin announced there was "unequivocal evidence" the 44-year-old Kremlin critic had been poisoned with the nerve agent.
On Wednesday, General Secretary of the Alliance Jens Stoltenberg condemned the use of the a military-grade nerve agent and called upon Moscow to conduct full and transparent investigation.
"We’ll consult with Germany & all #NATO Allies on the implications", Mr Stoltenberg stated.
It is the second time when Kremlin used the banned chemical weapon against the political opponents.
The Russian agents used Novichok in the attack against former Russian military officer Mr Sergei Skripal and his daughter in the English town of Salisbury two years ago.
The Skripal case - the first use of offensive use of chemical weapons in Europe since World War II - prompted NATO to expel seven Russian diplomats in retaliation.
The Navalny poisoning, the latest in a long series of assassination attempts against Kremlin critics, has triggered international outrage and demands for punitive measures against Moscow.