Conversation so far:
what was the trial about?
In February 1992, Mielke was put on trial for the first degree murders.
who was he accused of murdering?
Captains Anlauf and Lenck as well as the attempted murder of Senior Sergeant Willig.
what was the motive behind the killings?
CANNOTANSWER.

Question: how long was the trial?
Self-contained rewrite: how long was the trial of Erich Mielke?