Conviction of a deceased (!) violates the fair trial. Presumption of innocence guarantees lack of criminal responsibility after the defendant’s death.
JUDGMENT Magnitskiyiy and others v. Russia 27.08.2019 (no. 32631/09 and 53799/12) see here SUMMARY Conviction of the deceased. Criminal responsibility does not remain after the defendant death. This dictates the presumption of innocence. Conviction of the accused after his death violates the right to a fair trial as criminal proceedings require the defendant to participate. […]