Kedah Menteri Besar Mukhriz Mahathir has apologised for not greeting Johor ruler Sultan Ibrahim Sultan Iskandar, a video clip of which has gone viral on social media.

The incident took place when Mukhriz, alongside his father Prime Minister Dr Mahathir Mohamad, paid his last respects to Sultan of Pahang Sultan Ahmad Shah Al-Musta'in Billah at Istana Abu Bakar yesterday