Alriwak News — Hackers stole $2.3 million from the Wisconsin Republican Party’s account that was being used to help re-elect President Donald Trump in the key battleground state, the party’s chairman told The Associated Press on Thursday.

The party noticed the suspicious activity on Oct. 22 and contacted the FBI on Friday, said Republican Party Chairman Andrew Hitt.

Hitt said the FBI is investigating. FBI spokesman Leonard Peace did not immediately return a message seeking comment.

The attack was discovered less than two weeks before Election Day as both Trump and Democratic rival Joe Biden made their final push to win Wisconsin and its 10 electoral votes. Trump won the state by fewer than 23,000 votes in 2016 and planned his third visit in seven days on Friday. Biden also planned to campaign in Wisconsin on Friday. Polls have consistently shown a tight race in the state, usually with Biden ahead by single digits and within the margin of error.

Hitt said the stolen money would have been used in the final days of the campaign to make snap spending decisions based on the state of the race.

He said the hackers manipulated invoices from four vendors who were being paid to send out direct mail for Trump’s re-election efforts and to provide pro-Trump material such as hats that could be handed out to supporters. Invoices and other documents were altered so when the party paid them, the money went to the hackers instead of the vendors, Hitt said.

The hack was discovered after someone noticed that an invoice was generated that should not have been, he said.

Hitt said it appears the attack began as a phishing attempt. It does not appear that any data was stolen, said party spokesman Alec Zimmerman.