Ukraine's prime minister has blamed the Russian secret service for a hack attack against German government websites.
A pro-Russian group has already claimed responsibility but this is the first suggestion that it was backed by the Russian government.
Prime Minister Arseny Yatsenyuk made his remarks ahead of a meeting with German Chancellor Angela Merkel.
But one expert questioned what real evidence there was for the claims.
The attack targeted webpages for Mrs Merkel and the German parliament. Both sites were inaccessible from 10:00 Wednesday until the evening.
A group calling itself CyberBerkut claimed to be behind it. Berkut refers to Ukraine's now disbanded elite riot police force who were accused of beating, torturing and shooting demonstrators.
Ahead of his meeting with Mrs Merkel, Mr Yatsenyuk was asked by German TV reporters if pro-Russian hackers from Ukraine were responsible.
"I strongly recommend that the Russian secret service stop spending taxpayer money for cyber-attacks against the Bundestag and Chancellor Merkel's office," he replied.
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