US House of Representatives Speaker Nancy Pelosi predicted Friday that the House will begin public hearings on the indictment of US President Donald Trump in November.
Pelosi was quoted by Bloomberg News as saying there was no deadline for the investigation.
"I suppose there will be a public hearing in November," Pelosi said at a roundtable meeting with Bloomberg News editors and reporters, adding that any case to dismiss the president "must be fully staffed."
Pelosi's remarks came a day after the US House of Representatives adopted a resolution on starting a formal process to hold public hearings to investigate whether Trump used his position to pressure Ukraine to open a politically motivated probe in exchange for military aid.
Pelosi said secret hearings for witnesses would continue as long as they were "fruitful."
In its first formal test of support for the accountability inquiry, the Council agreed to proceed with the investigation with 232 backing and 196 members objecting.
"This is a sad day," Pelosi said before the vote. "No one came to Congress to question a president in preparation for his removal."
"It's the biggest campaign of persecution in American history," Trump said on Twitter.
The investigation is linked to a telephone conversation on July 25 in which Trump asked his Ukrainian counterpart Vladimir Zelinksy to question former US Vice President Joe Biden and his son Hunter, who served as director of a Ukrainian energy company.
Biden is the Democratic nominee for Trump's next presidential election in November 2020.