Russia¡¯s most prominent opposition figure, Alexei Navalny, arrived in Berlin for treatment Saturday after falling into a coma in Siberia in what his family and supporters suspect was a deliberate poisoning weeks before nationwide local elections.

Navalny was admitted to Charit¨¦, one of Germany¡¯s leading medical research facilities, where he was undergoing extensive diagnostic tests, the hospital said after a plane transporting him from Russia touched down. He arrived more than 48 hours after he first lost consciousness, a delay his supporters bitterly criticized Russian officials for having caused.

¡°Patient stable, mission accomplished,¡± said Jaka Bizilj, who runs the Cinema for Peace, the foundation that organized the air transport at the urging of Navalny¡¯s friends and family.