Venezuela's auditor general's office has announced it has stripped opposition leader and speaker of congress Juan Guaido of the right to hold public office for 15 years.
The move, announced by Auditor General Elvis Amoroso on state television, marked another effort by President Nicolas Maduro's regime to politically sideline Mr Guaido, who is recognised by the US and 50 other countries as Venezuela's interim president.
Mr Amoroso said his office decided "to ban this citizen (Juan Guaido) from all elected public office for the maximum duration under the law."
Mr Guaido has rejected an announcement, saying the order was invalid.
"He is not auditor general.... The legitimate congress is the only one with power to designate an auditor general," he said.
Venezuela's single-chamber congress, called the National Assembly, is in opposition hands and stands as the sole institution not under the control of Mr Maduro.
The country's supreme court and a parallel legislature set up by Mr Maduro in 2017 regularly adopt decisions scrapping National Assembly motions against the regime.
The National Assembly, for its part, often ignores or passes laws annulling decisions by what it regards as an "illegitimate" regime, asserting that Mr Guaido is in charge of the country constitutionally.
Although Mr Maduro's government has heeded warnings from the United States to not arrest Mr Guaido or face unspecified repercussions, the opposition leader's chief of staff was taken into custody last week and charged with "terrorism."
Mr Maduro has also accused Mr Guaido and the opposition of "terrorist acts" that caused a massive nationwide blackout for three days this week that authorities appeared to have repaired by Thursday.
The socialist president has been bolstered by the arrival last weekend of 100 Russian troops and Moscow's vow to stand up against what it said was a "coup" being fomented by Washington.
However, internationally, Mr Maduro has been weakened by Mr Guaido's rise to lead the previously fractured opposition and his endorsement as interim leader by most Western countries and big Latin American nations.
The US has handed diplomatic missions and seats on some international organizations to Mr Guaido's representatives, booting out Mr Maduro's envoys.
In a month, Washington is set to greatly ratchet up its sanctions on Venezuela by banning crude imports from the country, yanking a top revenue-earner for Caracas's already badly depleted coffers.
US President Donald Trump on Wednesday told Russia to "get out" of Venezuela.
Moscow responded by saying its troops will stay "for as long as necessary."