Below is our coverage of events as they unfolded on Saturday - a dramatic day in Ukraine's crisis, which saw President Viktor Yanukovych removed by MPs and fleeing Kiev, but refusing to stand down.
- Ukraine's parliament votes to oust President Viktor Yanukovych as opposition takes effective control of the capital, Kiev
- Opposition leader Yulia Tymoshenko addresses crowds in Kiev after being freed from hospital where she was under prison guard
- Parliament elects Oleksandr Turchynov, an ally of Yulia Tymoshenko, as the new speaker (All updates GMT)
- Mr Yanukovych appears on TV, brands events in Kiev as a "coup" and refuse to step down
- New elections set by parliament for 25 May
- Leaders of mainly Russian-speaking regions in east Ukraine say they are taking control of their territories until "constitutional order" is restored in Kiev.
- Simeon Paterson
- Jasmine Coleman
- Lyndsey Telford
- Paul Kirby
A BBC correspondent has just entered the presidential palace in Kiev. He says the building appears to be empty.
Interfax Ukraine quotes an "informed source" that President Viktor Yanukovych arrived in the eastern city of Kharkiv overnight. He was expected to attend a congress of deputies from Crimea and Sevastopol but the source told the agency "the situation is changing dynamically".
This is a picture of anti-government protesters outside parliament in Kiev. Parliament speaker Volodymyr Rybak, has tendered his resignation citing "health reasons", the parliament's TV channel Rada reports.
Opposition leader Vitaly Klitschko says President Yanukovych has left Kiev, AFP news agency reports
Early elections are the only option, Mr Klitschko tells parliament in an address on parliament TV channel Rada.
Vitaly Klitschko is calling for presidential elections by 25 May, AFP reports. He says President Yanukovych "has left the capital".
"Millions of Ukrainians see only one choice - early presidential and parliamentary elections," Vitaly Klitschko tells an emergency session of parliament.
The BBC's Duncan Crawford
tweets: Protesters in front of the Presidential Administration building in #Kiev. No riot police. No #Yanukovych.