The Prescription Medicines Code of Practice Authority, an independent, self-regulatory body established by the Association of the British Pharmaceutical Industry, ruled that the company breached five rules in its Code of Practice for advertising.

A U.K. regulatory agency found that top Pfizer employees “brought discredit” on the pharmaceutical industry when they made misleading claims promoting an “unlicensed medicine” in tweets about the COVID-19 vaccine, The Telegraph reported Sunday.

The Prescription Medicines Code of Practice Authority (PMCPA), an independent, self-regulatory body established by the Association of the British Pharmaceutical Industry, ruled that the company breached five rules in its Code of Practice for advertising.

U.K. pharmaceutical industry watchdog UsForThem filed the complaint with the PMCPA in February 2023. The complaint pertained to 2020 tweets by top Pfizer executives, including U.K. Medical Director Berkeley Phillips. The tweets were still visible on social media when the complaint was filed.