Ukraine PM calls cyberattack "unprecedented"

Ukrainian Prime Minister Volodymyr Groysman gestures during a news conference in Kiev, Ukraine April 11, 2017. REUTERS/Gleb Garanich

KIEV (Reuters) - Ukrainian Prime Minister Volodymyr Groysman said a wave of cyberattacks on Ukrainian state institutions and companies on Tuesday was "unprecedented" but had not hit "important" IT systems.

"It was an unprecedented attack, but our IT experts are doing their work and protecting strategic infrastructure. Important systems have not been affected," he said in a post on Facebook.