After the death of a man Ende in the Frankfurt district of Griesheim, the suspicion of manslaughter is now being examined.
The investigations against two police officers involved in the operation were "conducted in a completely neutral manner because of the shooting" and continued, the Frankfurt public prosecutor said on request.
Individual results of the investigation are not yet to be announced before the investigations are completed.
It is common practice to investigate police officers who fire shots during an operation.
Alexander Juergs
Editor in the Rhein-Main-Zeitung.
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The operation at the mentally ill man's apartment on June 22nd happened because a neighbor heard loud voices and called the police.
Three officers arrived at the apartment a little later.
The police are said to have found the forty-one-year-old armed with a pistol and a knife at the front door.
An argument broke out; the man had pushed one of the officers down the stairs a little later, in doing so he had come into possession of a service weapon.
Then the shot was fired.
The injured man retired to the apartment and eventually died of internal bleeding.
Sisters make grave allegations
In the Frankfurter Rundschau, the sisters of the slain have now expressed doubts about the previously known representation of the events.
They learned from neighbors that there had been a lengthy conversation between the man and the police officers before the situation escalated, they told the newspaper.
They accuse the police of not having a de-escalating effect on her brother, even though his mental illness was known.
The sisters also complain that their brother was not helped in time, that too much time had passed before the police returned to the apartment after the escalation.
"He's slowly bleeding to death, that's what drives us crazy," said one of the women of the Frankfurter Rundschau.