The former Prime Minister of Ukraine has been taken from court to a detention centre in Kiev after being charged with contempt during her trial.
The judge decided that Yulia Tymoshenko was “systematically” disrupting courtroom proceedings.
He did not say how long the detention would last and adjourned the hearing until Monday.
Tymoshenko is on trial on charges of abuse of office which she denies.
Hundreds of Tymoshenko supporters gathered outside the courtroom. Dozens of police officers pushed them back to make way for the vehicles transporting Tymoshenko to the detention centre.
The EU’s foreign policy chief and enlargement commissioner have both criticised the contempt ruling as well as the charges against Tymoshenko.
Brussels is in talks with the former Soviet republic to strenghten bilateral ties.