"The man replied 'Nope' and then quickly fled the store," he said. Cremeans said he was "absolutely certain" it was Anglin, but couldn't serve him with the suit because he was on a personal errand and didn't have the paperwork.

In response to a Huffington Post report on the alleged sighting — before the affidavit was filed — Anglin mocked the process server's claim in social media posts.

"There are 2 million people in Columbus metro area. A process server happens by coincidence to run into me in a checkout line," he wrote on his Gab account. "No one (expletive) believes this. It is statistically impossible."

Gersh says her family received a barrage of threatening and harassing emails, phone calls and other messages after Anglin published their personal information, including her 12-year-old son's Twitter handle and photo. In a string of posts that began last December, Anglin accused Gersh and other Jewish residents of Whitefish, Montana, of engaging in an "extortion racket" against the mother of white nationalist Richard Spencer.

Gersh's lawsuit said she agreed to help Spencer's mother sell commercial property she owns in Whitefish amid talk of a protest outside the building. Sherry Spencer, however, later accused Gersh of threatening and harassing her into agreeing to sell the property.