MOSCOW, Aug. 14 (Xinhua) -- Prime Minister Dmitry Medvedev's Twitter account has been hacked, and the words on his resignation were fake, the Russian government press service said Thursday.
"The (latest) tweets are not true. We have been working over the problem," it told RIA Novosti news agency.
Earlier on the day, a Tweet saying "I'm going to resign, I feel ashamed of the government actions, sorry for that" appeared on Medvedev's personal page, which has been reposted for more than 6,200 times before it was deleted.
Several sarcastic Russian-language tweets were posted in some 40 minutes when the alleged hacker was in control.
"We may return to the 1980s, that's too sad. If this is the aim of my colleagues in Kremlin, it'll be achieved soon," said one Tweet.
"I'll still be a freelance photographer," said another.
This was the first time Medvedev's Twitter account was hacked, but not for other Russian high-ranking officials.
Kremlin spokesman Dmitry Peskov told a local radio station that the hacking incident "one more time highlights the necessity to safeguard cyber security."
An unnamed government spokesperson told Interfax news agency that "the circumstances of the hacking attack remain unknown. All technical measures needed to mitigate its effect are being taken."
No more details about the alleged hacker are available now.