Germany formally requested “technical assistance” from the Organization for the Prohibition of Chemical Weapons (OPCW) over the alleged poisoning of Alexei Navalny.
The Hague-based organization sent experts to Berlin and collected samples from the Russian opposition leader. Results of tests for the Soviet-style nerve agent were “forthcoming”.
The West says Kremlin critic Navalny, who is being treated in a Berlin hospital, was poisoned with the nerve agent and has pushed Russia to shed light on the incident. Moscow denies all involvement.
"A team of experts from the (OPCW's) Technical Secretariat independently collected biomedical samples from Mr Navalny for analysis by OPCW designated laboratories," the OPCW said in a statement.
"Results of this analysis are forthcoming and will be shared with the German authorities."
OPCW chief Fernando Arias earlier this month voiced "grave concern" over the Navalny incident.
Germany said on Monday that labs in France and Sweden had confirmed its own finding that the banned weapons-grade substance was used, but that it was awaiting the OPCW's evaluation.