Germany's highest court in Karlsruhe has ruled that extending the sentences of dangerous criminals is in line with the country's constitution. The court decided that life-long preventative detention in extreme cases like child molesters and murderers was constitutional and did not breach the right of human dignity or the right to freedom. The ruling comes after a 46-year-old man convicted for theft and two attempted murders appealed after his ten year preventative detention expired. The man has been imprisoned since he was 15 and only been released for a few months before being placed under preventative detention again. The defendant's lawyer condemned the ruling has been a back door way of keeping his client locked up. Currently there are more than 300 criminals locked away in preventative detention mostly for sex crimes.