“To some extent, clouds have gathered over our relationship. It is Russia that should make a greater contribution to clarifying the case with Navalny, "Maas quoted TASS as saying.
The minister called for a comprehensive and transparent investigation into the incident.
“The Navalny case shows even more that we, as the EU, need a more principles and interests-based policy towards Russia than ever before,” he added.
As noted by Maas, German Chancellor Angela Merkel indicated that further research is currently ahead, including on the substance "to which Navalny was exposed."
“We await the results of the research and then decide how we should deal with it ... We agreed that within the EU we will continue to very closely coordinate our actions,” he concluded.
Earlier, the Charite clinic in Berlin reported that Navalny was still in a coma and connected to a ventilator.
His condition is assessed as consistently serious, without an acute threat to his life.
On August 27, the Prosecutor General's Office of Russia asked the German side to provide information about the research and preliminary diagnoses of Navalny.
The department announced its readiness, on the basis of reciprocity, to provide Germany with the results of examinations of the patient carried out in Russia.
As stated in the Kremlin, the Russian side is no less interested in finding out the reasons for what happened.