According to a Russian news outlet, Alexei Navalny’s body is now in a morgue, but no post-mortem examination has yet been performed. The same media organisation also cites an inmate who described a “mysterious commotion” on the night before his death was announced.
I suppose that historically, this sort of thing was kind of the norm for rulers. Oppose the king/emperor/etc, wind up in prison and/or dead. Lèse-majesté. The original meaning of treason.
In Russia of 2024, at least there’s still the need to pretend; the government doesn’t feel the freedom to openly have political opponents killed.