ACMA warns MMA fighter Jamie Mullarkey over illegal gambling promotion

Australian mixed martial arts (MMA) fighter Jamie Mullarkey has been formally warned by the Australian Communications and Media Authority (ACMA) after an investigation found he promoted an illegal offshore gambling service through sponsored posts on his Instagram account. The enforcement action follows an ACMA investigation that concluded Mullarkey breached Australia’s online gambling laws in 2025 by promoting the offshore gambling operator Leon on social media. According to the regulator, his I