A hotel industry-backed campaign released an ad Monday linking home-sharing platform Airbnb Inc. to public safety threats.

The 30-second ad by the Hotel Association of New York City Inc. and the union that represents hotel workers links short-term rentals to the May bombing that killed 23 people and injured hundreds more in Manchester, England, following an Ariana Grande concert.

The ad references media reports that bomber Salman Abedi used a short-term rental apartment he found online to have “massive packages” sent before the bombing. The unit rented by Abedi, however, was not an Airbnb unit, according to the company. ShareBetter, the hotel-industry backed campaign opposing the company, also acknowledged that the flat Abedi rented wasn't rented on the Airbnb platform.