Valys turned to the Seimas on Thursday at the request of Vilnius District Prosecutor's Office.
Vilnius prosecutors are carrying out a probe into Uspaskich's public statements about judges and courts that heard the Labor Party's fraudulent bookkeeping case. The parliament has already cancelled Uspaskich's legal immunity in that case.
Pursuant to the Constitution of Lithuania, a member of the Seimas cannot be prosecuted without prior permission of the Seimas.
Prosecutors launched a pre-trial investigation into contempt of court on August 7. Uspaskich said about judges who heard the Labor Party's fraudulent bookkeeping case: "I am telling this point-blank. They are criminals, if they make such decisions. Let them sue me. They wouldn't dare, they are cowards, they are not independent."
