Clad in a bright red jubah (robe), Selangor Menteri Besar Azmin Ali's brother Mohamed Azwan turned up at the Umno general assembly at the Putra World Trade Centre (PWTC) in Kuala Lumpur this afternoon.

Speaking to reporters, Azwan threatened to expose the PKR deputy president's “secrets”.

Azwan's show of solidarity with Umno comes in the wake of a viral video in which the former TV host vowed to destroy his brother.

"For years I have kept Azmin's secrets and God willing, I will expose them one by one," he said, adding that one of the "secrets" involved an incident in a washroom.

Azwan said the reason he came to PWTC was to show his brother that he was serious...