until 1972
Note from Martin Bormann in Part 2 of The Face Of The 3rd Reich

Bormann probably committed suicide on a bridge near Lehrter station. His body was buried nearby on 8 May 1945, but was not found and confirmed as Bormann's until 1972; the identification was reaffirmed in 1998 by DNA tests. — Wikipaedia (10/2/2019)