The man behind shocking allegations of corruption involving the country's highest office says he will not remain silent despite attempts to intimidate him.

The explosive audio clip challenges the police's claim that officers shot the three men in self-defence.

The former leader also urges that everyone involved in the preparation, negotiation and finalisation of the Oct 26 trade agreement be questioned.

Sofia Rini Buyong also appears to defend Shamsul Iskandar Mohd Akin, saying he gained nothing from issuing such letters as he was simply following an order from his boss.

Mahajoth Singh was told to appear before MACC on Sunday morning, a move condemned by lawyers as unlawful and a breach of client confidentiality.

The wife of businessman Albert Tei says her recording of the conduct of armed and masked officers inside their house was also deleted.

TNB’s sustained efforts underline the company’s mission to serve the rakyat, uplift communities and build Malaysia’s energy resilience for generations to come.

It is the strongest response yet from the elderly leader about the Oct 26 agreement which has angered the Malaysian public.

It is the first direct complaint from Beijing regarding the agreement praised by the Malaysian government.

The businessman at the centre of an explosive scandal involving the nation's top office was interrogated by MACC officers at his home.

Drama unfolds as the Prime Minister's Office gets entangled in one of the most serious graft scandals in recent years.

This comes despite the agency saying the businessman would only be questioned next week.