"The ongoing situation when members of the Seimas want to know specific data from pre-trial investigation and are trying to take over functions of controlling prosecutors' activities is intolerable," Valys said in a statement.
He said he had refused to provide information to the Anticorruption Commission as it is exceeding its mandate.
The Anticorruption Commission asked Valys last week to provide information on certain pre-trial investigations. Commission Chairman Ligitas Kernagis told journalists following a commission meeting the commission had not received answers to certain questions, and commission members were dissatisfied.
The prosecutor general has been summoned to the Anticorruption Commission's meeting on Wednesday.