WASHINGTON -  The US state of Wisconsin's election board has agreed to conduct a statewide recount of votes cast in the presidential election, as requested by the defeated Green Party candidate, Jill Stein, alleging that foreign hackers could have skewed the result by obtaining the state’s voter database and then filing bogus absentee ballots.

Stein is also seeking similar reviews in two other states - Michigan and Pennsylvania - where Donald Trump, the president-elect, scored narrow wins.

The recount process, including an examination by hand of the nearly 3 million ballots tabulated in Wisconsin, is expected to begin late next week after Green Party candidate Jill Stein's campaign has paid the required fee, the Elections Commission said.

An Attorney for Hillary Clinton’s campaign says it will participate in the Wisconsin recount of the recent presidential election initiated by Green Party presidential nominee Jill Stein.

Marc Elias, the campaign’s general counsel, said on Saturday that the Clinton team has been conducting an extensive review of election results, searching for any signs that the voting process had been tampered with.

He emphasized that analysts employed by the campaign have largely found no evidence to conclude that the election was sabotaged, but said that the campaign is committed to helping ensure a fair recount process.

“The campaign is grateful to all those who have expended time and effort to investigate various claims of abnormalities and irregularities,” Elias wrote.

“While that effort has not, in our view, resulted in evidence of manipulation of results, now that a recount is underway, we believe we have an obligation to the more than 64 million Americans who cast ballots for Hillary Clinton, the Democratic presidential nominee, to participate in ongoing proceedings to ensure that an accurate vote count will be reported.”

The state faces a Dec. 13 federal deadline to complete the recount, which may require canvassers in Wisconsin's 72 counties to work evenings and weekends to finish the job in time, according to the commission.

The recount fee has yet to be determined, the agency said in a statement on its website. Stein said in a Facebook message on Friday that the sum was expected to run to about $1.1 million.

She said she has raised at least $5 million from donors since launching her drive on Wednesday for recounts in Wisconsin, Michigan and Pennsylvania - three battleground states where Republican Trump edged out Democratic nominee Hillary Clinton by relatively thin margins.

Stein has said her goal is to raise $7 million to cover all fees and legal costs.

Analysts said her effort may have given a ray of hope to dispirited Clinton supporters, but the chance of overturning the overall result of the Nov. 8 election is considered very slim, even if all three states go along with the recount.

The Green Party candidate, who garnered little more than 1 percent of the nationwide popular vote herself, said on Friday that she was seeking to verify the integrity of the US voting system, not to undo Trump's victory.

While there was no evidence of tampering or voting errors in the election, only a thorough review of results from the three states at issue will reassure Americans, Stein said.

"This was a hack-riddled election," she told CNN, pointing to various cyber-attacks on political organizations and individual email accounts before Election Day and media reports citing concerns raised by computer security specialists.

Experts urged extra scrutiny of the three states, Stein said, because their voting systems were seen as vulnerable. They also cited "unexplained high numbers of undervotes," the close finish between the two nominees and "discrepancies between pre-election polling and the official result," she said.

According to Stein, the Wisconsin commission confirmed receipt of her recount petition at 3:45 p.m. local time, just over an hour before the deadline for filing. The filing deadline is Monday in Pennsylvania and Wednesday in Michigan.

The Wisconsin board said Stein was joined in her petition by another third-party candidate, Rocky Roque De La Fuente.

Although Trump won narrowly in Wisconsin, Michigan and Pennsylvania, the margins make it highly unlikely any recounts would end up giving Clinton a win in all three states, which would be needed for the overall election result to change. Trump beat Clinton in Pennsylvania by 70,010 votes, in Michigan by 10,704 votes and in Wisconsin by 27,257 votes.

The presidential race is decided by the Electoral College, based on a tally of wins from the state-by-state contests, rather than by the popular national vote. The Electoral College results are expected to be finalized on Dec. 19.

Trump surpassed the 270 electoral votes needed to win, although Clinton will have won the national popular vote by more than 2 million ballots once final tallies are in.

A representative for Trump's transition team on Thursday had no comment on Stein's effort, and Clinton has not commented on Stein's effort.