The Czech Republic's Constitutional Court has overturned parts of a law that force telephone operators to retain data on telephone calls and Internet traffic.
The court said Thursday the practice is unconstitutional. It says the provisions ordering data on all calls, faxes, text messages and e-mail exchanges to be retained for six months enabled a "massive" invasion into citizens' rights and were not in line with the rule of law.
Fifty-one lawmakers of Parliament appealed to the court to overturn the law, which was passed as part of anti-terrorism efforts.
Germany's Federal Constitution Court issued a similar ruling last year. The law stems from an European Union directive.