Lithuanian President Rolandas Paksas has refused to face questions from a special parliamentary commission preparing for his possible impeachment.
Rolandas Paksas denies any wrongdoing
Mr Paksas's spokeswoman said the panel had ignored requests for documents related to accusations against him.
The commission was set up last month after parliament approved a report detailing concerns about links between Mr Paksas's office and organised crime.
The report said the links made Mr Paksas a threat to national security.
The special parliamentary commission will recommend whether a vote should be held on removing Mr Paksas from office.
The president has consistently denied any wrongdoing, and says he will not resign.
Last month the Lithuanian Constitutional Court ruled that Mr Paksas violated the constitution when he gave citizenship to Russian businessman Yuri Borisov, the main backer of his successful election campaign.
In its ruling, the court said Mr Paksas had given Mr Borisov privileged treatment, breaching the article of the constitution declaring all people equal under the law.
Political and church leaders, including Prime Minister Algirdas Brazauskas, have added their voices to those of demonstrators calling for Mr Paksas' resignation.