Or German of the day: Migrationshintergrund.
That means migration background.
It might be the norm in other countries, but in Germany, revealing a criminal’s country of origin in the media is still highly controversial. But some say that doing so can even serve to rectify prejudiced opinions.
Rectify prejudiced opinions? You mean, knowing the truth might “rectify” the opinions you don’t want people to have? Sure, that might be a good start. Might not be. Hard to say for sure.
The suspect is a “German WITHOUT a migration background.”