German doctors from the Charité hospital, treating Russian opposition leader Alexei Navalny, have established contact with Bulgarian medics who treated businessman Emilian Gebrev, poisoned in Bulgaria back in 2015, Insider, Spiegel and Bellingcat reported, quoted by Deutsche Welle and Russian RBK Daily.

Talks between German and Bulgarian medics show that Charité experts see similarities between the two incidents.

The symptoms indicate that Navalny was exposed to the same substance from the group of organophosphates, which Gebrev was poisoned with. These include various insecticides and nerve poisons such as Novichok, the articles read.

The Charité Hospital in Berlin has declined to comment on "assumptions and speculations" about a "Bulgarian trace" in Navalny's poisoning. This was what a spokesperson of the hospital said, according to Russian state new agency RIA Novosti, quoted by Bulgarian agency BGNES.