Conversation so far:
Why was Erich imprisoned?
Mielke was then put on trial for ordering the shootings of East Germans who were trying to defect to the West.
was he found guilty?
In November 1994, the presiding judge closed the proceedings, ruling that Mielke was not mentally fit to stand trial.
Was he ever jailed?
At 87 years of age, Erich Mielke was Germany's oldest prison inmate and had been incarcerated for 1,904 days.
Was he released?
In 1995, parole officers and Mielke's attorneys argued that he was "totally confused" and obtained his release.
what other reason did they have for releasing him?
Public Prosecutor of Berlin announced that he was "not interested in chasing an 87 year old man anymore.
could you give me more information about his imprisonment please?
During his incarceration, at JVA Moabit corrections officers supplied Mielke with a red telephone like the one in his office at Stasi Headquarters.
Why did he give him the telephone?
Although it was not connected to the outside world, Mielke enjoyed having imaginary conversations with non-existent Stasi agents.

Question: What else did he like doing?
Self-contained rewrite: Besides talking on the phone, what else did Erich Mielke like doing?