British Transit Police are still on the hunt for the person behind Overweight Haters Ltd., the group that distributed fat-shaming cards to women on the London Tube on November 28.
“We are continuing to investigate and urge anyone with information to come forward,” BTP’s senior press officer John Ellul said in a statement to PEOPLE.
The BTP has received three formal complaints from commuters who received the card, along with several eyewitness reports, he added.
Kara Florish, who initially posted images of the cards on Twitter, gave a description of the man who handed her the fat-shaming card.
“We had just pulled into Warren Street station when the man walked to get off the train and put the card on my lap before he got off,” Florish told the British website Stylist. “Unfortunately I didn’t see him, but did notice that he was ordinary looking, a middle-aged man in normal clothes.”
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Florish says she’s not upset about the incident, but it could hurt others who are “struggling with confidence and eating disorders.”
Another Tube rider, Sean Thomas Knox, tweeted about the fat-shaming cards after witnessing a man hand one to an “overweight girl” who then burst into tears.
He described this man as “a hipster.”
“Smartly, trendily dressed. Beard. Perhaps it was a piece of conceptual art,” Knox tweeted.
But some Londoners are turning the incident into something positive. Bethany Rutter, a social content executive with plus-size brand Navabi, had the idea to print and distribute cards that say, “You Look Great!”
“I know how much a compliment from a stranger can brighten my day,” Rutter, 26, tells PEOPLE. Rutter gave her spirit-lifting cards to people of “any gender, any size” on the London streets.