Matthew Lani, a young South African man with over 300,000 followers on TikTok, was recently arrested for allegedly posing as a doctor and sharing medical advice without having any medical experience.

27-year-old Matthew Bogani Lani rose to internet fame when he started claiming that he was one of the youngest doctors in South Africa. He often told his followers that he was somewhat of a wunderkind, skipping several high-school grades entirely to graduate at age 16, before enrolling at Wits University to study medicine. He often filmed himself patrolling through hospitals dressed in white and wearing a stethoscope around his neck, claiming to be on his way to see patients and even dishing out medical advice to his followers, or selling them medication.

He wouldn’t be the first doctor to do this in order to build an online following, but the problem was that Lani wasn’t a doctor at all, he just posed as one.

Last month, Matthew Lani was arrested inside the Helen Joseph Hospital in Johannesburg. He was wearing a hoodie and had a surgical mask over his face, with a stethoscope around his neck. This was allegedly not his first time masquerading as a doctor in the hospital for his online audience, as evidenced by some of his TikTok videos, but it was the first time he was caught.