A person close to the investigation said the inquiry was continuing and that more charges were possible.
The two state agencies say that their inquiries are continuing.
Four years later, the inquiry continues, with no charges yet filed.
While Tuesday's meeting may provide an opportunity to try to do that, the federal inquiry continues.
It is likely that as the inquiry has continued, the investigators have found more allegations to check.
"There have been no arrests so far and inquiries are continuing."
An inquiry continues in the case of a man who died waiting for an ambulance.
The inquiry, expected to last for four days, continues.
Polls suggest, however, that most Germans want the inquiries to continue.
He added that the inquiries into the possibility of more wrongdoing should continue.