An election worker in Clark County, Nev. alleges to have witnessed voting irregularities at a polling center according to an affidavit obtained by the Washington Examiner.

The redacted copy of the sworn affidavit claims mail-in ballots were improperly filled out in a Biden-Harris van outside a polling place.

The alleged incidents reportedly took place during early voting from Oct. 17 to Oct. 30.

The whistleblower said the van had to be told “several times a day to stay 100 feet away from the polling location.”

“I personally witnessed two people handing multiple unopened mail-in ballot envelopes to two other people who then opened and filled out the ballots against the side of the Biden/Harris van,” the affidavit said. “The same two people who marked the ballots then put the marked ballots in official pink and white envelopes. These people were not poll workers.”

The whistleblower added that a group of people “formed a human wall” to block visibility as ballots were allegedly being marked.

“There were 5 or 6 additional people who formed a human wall, which moved as I walked by, apparently in an attempt to block my view of the four people who were opening envelopes, marking ballots, and placing those ballots in the pink and white return envelopes,” the affidavit said.

The whistleblower reported the incident to a supervisor, who then called the Clark County Elections Office.

The Clark County Elections Office did not respond to the incident.

“Someone there told her nothing could be done about the ballots or envelopes being handled outside at the Biden/Harris area,” the whistleblower said in the affidavit.

An official from the elections office gave a statement in the affidavit saying that “ballot harvesting is legal in Nevada.”

Ballot harvesting is the submitting of completed absentee or mail-in voter ballots by third-party individuals, such as a family member, friend or volunteer.

The Trump campaign has claimed voting irregularities and fraud in multiple states including Arizona, Pennsylvania, Michigan, Georgia, Wisconsin and Nevada.