A Clinton campaign official alleges that the women engaged in several efforts to entrap supporters. In one scheme, described by Clinton staff, a woman attempted to pass a cash donation to Clinton volunteers and interns. In another, a woman approached the campaign on Aug. 19 and said both her parents had donated to Clinton the legal maximum of $2700 each and wanted to funnel an additional donation through their daughter, a violation of federal law. On Aug. 13, a woman claiming to be Canadian approached another Clinton fellow to ask how to falsify an address for a campaign donation.

In another instance, a woman volunteering with the Clinton campaign on voter registration efforts in Iowa City returned to the campaign’s office in Des Moines and asked whether it was okay that she refuse to register people who don’t support Clinton, the campaign official said. The Clinton campaign maintains that its policy is to register all voters, regardless of their preference in candidates.

The women presented themselves as Allison Holmes, Jess Koski, and Jess Jones, according to the Clinton campaign, which collected names, email addresses, and phone numbers for the women. All gave the same phone number, which is listed on the website for the University of Minnesota-based Students for a Conservative Voice. Messages left at the number by TIME requesting comment were not returned. The women did not identify themselves as part of O’Keefe’s group, the campaign said.