Hackers broke into the official Twitter account of the Russian Prime Minister Dmitry Medvedev and posted a spoof message saying he was quitting.
The fake tweet had Medvedev saying: "I am resigning. I am ashamed of the government's actions. I'm sorry." Medvedev's office rushed to confirm his account was hacked.
Using an informal version of the President Vladimir Putin's first name, the hacker tweeted: "I have long wanted to tell you. Vova! You are wrong!"
More top news
Newly-released documents reveal how British spymasters used an enticing female agent to test the mettle of rookie spies.
Researchers studying the King's remains believe he died after sustaining numerous blows to the head.
Edinburgh and its institutions have been at heart of the Union since it came about in 1707, here we look at the city's history.