The number of violent crimes in the Czech Republic rose by 7 percent in 2010, the Czech police said on Wednesday. Despite a slight drop in the number of murders, which decreased by eight to 165, there were more cases of teenagers or young adults murdering their parents. There was also an increase in cases of manslaughter, negligent manslaughter, and stalking. The sharpest, 22-percent increase was registered in rape cases. The head of the criminal police unit, Jan Noga, said that alarmingly, 70 percent of rape victims were under the age of 18. Mr Noga said the murder clearance rate was 90 percent.