Mike Lindell, CEO of MyPillow Jabin Botsford/The Washington Post via Getty ImagesMike Lindell claimed "Antifa Things" were trying to infiltrate the 72-hour cyber symposium.Lindell stated that he was warned of a possible attack on the venue for stealing devices.A video from the parking lot of the venue showed three people singing hymns right in front of it.For more stories, visit Insider's homepage.Mike Lindell, CEO of MyPillow, claimed that "Antifa" was trying to infiltrate his cyber symposium in South Dakota on the final day. However, there were no people singing hymns in the lot.Insider saw a video in which Lindell mentioned a possible attack by Antifa on the symposium venue. In an effort to prove his conspiracy theories, he is hosting a marathon conference lasting 72 hours in South Dakota."They would put a poison pill in everyone's stuff so that they could take your computers or whatever else it is. Lindell stated that she didn't understand what Lindell meant. "Antifa people are people who have infiltrated. They're telling me this morning that they're telling them, but I said,... we're going to keep going."Retired army colonel Phil Waldron, one of the conference's participants, also spoke up and warned that there was a "credible danger" at the symposium.Waldron stated that "we detected disruptors within, trying to get people evacuated, and really radical individuals outside trying to penetrate." "We have people exchanging badges in the parking lot, particularly press badges. Photo imagery has helped us identify those who are agitators or provocateurs.""They are clearly trying to subdue Mike's message. This is typical insurrection-type activity. Waldron said that this is part of the "color revolution".Salon reporter Zachary Petrizzo uploaded a video that he shot in the South Dakota parking lot on August 12. It showed no Antifa protesters nor a crowd, but only three people singing hymns and dancing.Continue the storyLindell claimed that he was also attacked outside of his hotel on Thursday morning."I'm okay. It hurts a bit. Lindell stated that she wanted everyone to be aware of all the evil out there.The AP spoke with Sam Clemens (Sioux Falls Police Department spokesman), who said that officers received a report on an assault at a symposium hotel. Clemens confirmed the assault occurred at 11.30 on Wednesday but didn't identify Lindell as being involved.Insider reached Lindell for comment but did not respond immediately.This is just the latest of a series of events that took place during the 72-hour cyber symposium by MyPillow CEO. Lindell was seen sprinting off the stage during Wednesday's event as Dominion Voting Systems announced that the $1.3B defamation lawsuit against him would proceed.Lindell tried to get the defamation suit dismissed at a hearing in June. On Wednesday, however, a federal judge ruled in favor of Lindell and Rudy Giuliani, pro-Trump lawyers.Lindell offered $5,000,000 to anyone who could prove his conspiracy theory that China had stolen the election for President Joe Biden last year. Later, he canceled the offer.Insider has the original article.