Lis Smith, a senior communications adviser for Pete Buttigieg's presidential campaign, was accused of running a fake account that appeared to be a Nigerian Buttigieg supporter.Screenshots of the account surfaced on Sunday that included a tweet that identified the author as Smith and matched the language of a letter the campaign sent to supporters.Smith acknowledged the theory on her official account, and the campaign denied she was behind it.Insider reached out to the owner of Instagram and LinkedIn accounts that appeared to be associated with the Twitter account, and he confirmed with photos and notification emails that he was not Smith, but a Nigerian Buttigieg supporter who had deleted the Twitter account after fear of being doxxed.Visit Business Insider's homepage for more stories.A senior adviser for Democratic presidential candidate Pete Buttigieg got caught up in the Twitter rumor mill on Sunday when she was accused of running a fake account purporting to be a Nigerian supporter of the former mayor, but the person who Insider confirmed owned the account said it was a misunderstanding.The theory that Lis Smith, the senior communications adviser for Buttigieg's campaign, was behind an account for someone named "Chinedu," who was described in the profile's bio as a "Pete Buttigieg supporter from Nigeria" who loves "wine and dancing," was surfaced in a series of screenshots that included a tweet from the account seemingly identifying itself as Smith.In the one tweet presented as possible evidence that Smith slipped while running the account, the author wrote on January 30: "Team Pete. Hey. It's Lis. It's Phase 4. Time to leave it all on the floor. Phone bankers, we need you."BRUHHHHH pic.twitter.com/5nNF55IJNF' Taryn Jay ' (@FeralHogs420) February 16, 2020The language in the tweet appears to match up with some lines from an email sent to supporters from the Buttigieg campaign, which announced "Phase 4," or "time to leave it all on the field."After the theory began making the rounds, the "Chinedu" account tweeted to mock the allegations, blaming "Bernie Bros." The account appeared to have been deleted by Sunday afternoon.Insider identified Instagram and LinkedIn accounts with associated usernames and similar profiles to the @easychinedu account, and when reached for comment via LinkedIn message, the person behind the accounts said that they were not affiliated with Buttigieg's campaign, and had run the Twitter account before deleting it Sunday for fear of being doxxed.The man, who said he was Nigerian and a supporter of the former mayor, also toldInsider he had posted the "It's Lis" tweet as a joking reference to the campaign email, which he saw circulating on Twitter.Insider confirmed the existence and identity of the man behind the accounts through requesting and receiving a photograph of the man holding a sign with the date and phrase "I am not Lis Smith" written on it. He also verified his ownership of the account through email screenshots.Insider is not revealing his identity to protect his privacy.By Sunday evening, Twitter user and Jewish Currents editor David Klion apologized for his role helping spread the notion that Smith was behind the account.I'm very confused and this whole thing seems fishy but as a journalist with a following, I shouldn't be tweeting when I don't actually know what's true. I have no intention to spread misinformation and I'm going to delete/un-RT any tweets that contributed to this. Sorry everyone.' DavidKlion (@DavidKlion) February 16, 2020Smith acknowledged the allegations on her official account, brushing it off as an "absurd" conspiracy theory.Yea guys I totally have the time to be running a sock puppet account from Nigeria. Find better conspiracies! ' https://t.co/0qbTF8Oq3m' Lis Smith (@Lis_Smith) February 16, 2020Matt Corridoni, the campaign's deputy rapid response communications director, denied that Smith created the account in a statement emailed to Insider."Nigerian shadow account conspiracy theories are the new rat emojis," Corridoni wrote. "Sad but not surprising."When asked if the campaign was officially denying that Smith had created and posted from the account, Corridoni confirmed it was regarded as "an online conspiracy theory.""Of course we are because this is very obviously an online conspiracy theory," Corridoni wrote in an email. "Quite shocked you'd think otherwise."Other journalists chimed in to joke about the theory, with New York Magazine's Olivia Nuzzi referencing email scams, writing that Smith "asked me for my social security number and the name of the street I grew up on...or else I couldn't have a press credential to cover Pete."Lis Smith asked me for my social security number and the name of the street I grew up on. She said that she needed the information or else I couldn't have a press credential to cover Pete. https://t.co/47kciih1lo' Olivia Nuzzi (@Olivianuzzi) February 16, 2020Smith is a well-known political adviser who partially made her name as a campaign aide for New York City Mayor Bill de Blasio and has been credited for the media strategy responsible for Buttigieg's rise in the polls, which she has described as "going out everywhere, meeting voters where they are, [and] not turning our noses up at non-traditional outlets."The account's identity as a black Buttigieg supporter touches on one of the campaign's widely reported points of vulnerability, as an Insider poll last fall found the former mayor was satisfactory to only 27% of black voters.Those results came a month after a report from The Intercept said the campaign had falsely said that three prominent black figures in South Carolina supported his Douglass Plan for Black America, when only two had and none had supported him as a candidate.Update: This post has been updated to include statements from the man claiming to have run the Twitter account.Join the conversation about this storyNOW WATCH: Extremists turned a frog meme into a hate symbol, but Hong Kong protesters revived it as an emblem of hope Click here to read full news..