Andre Bamberski, whose daughter Kalinka was killed at the age of 15, has been handed a one year suspended sentence by a French court for organising the kidnap of the man convicted of the crime.
Sky News reports that Kalinka, who was killed in 1982, had been living with stepfather Dietrich Krombach, her mother and younger brother in Scheidegg in Germany at the time.
Krombach, an ex-doctor, was suspected of giving her a lethal injection so he could rape her. He was suspended from practising after drugging and raping a 16 year-old in 1997.
Germany refused to extradite Krombach to France to face charges on the grounds of insufficient evidence and he was found guilty in absentia.
Determined to see justice done, Bamberski took matters into his own hands, hiring two men to kidnap Krombach, leaving him bound and gagged on the doorstep of a French court in 2009.
Krombach was found guilty of "deliberate violence leading to involuntary death" in 2011 and is now serving a 15 year sentence in France.
Bamberski remains unrepentant for his actions, replying to a reporter on whether he regretted his decision:
"No, no. Not at all. As I said again a few days ago, for me, the main thing was Kalinka."
The two men hired for the kidnapping were each sentenced to one year in prison.