Dr Mahathir Mohamad has now trained his guns on Defence Minister Hishammuddin Hussein after the latter urged the authorities to investigate the former premier and his children's wealth.

Hishammuddin made the call after Mahathir claimed that Deputy Prime Minister Ahmad Zahid Hamidi failed to provide a clear answer on the RM230 million in his bank account when he declared his wealth to the former premier in 1996.

"We should find out more about the wealth of a certain minister who suggested... (that his and his children's wealth be investigated) because I mentioned what Zahid had...

"So now Hisham wants me to be raided and investigated. I suggest we should also (raid) Hisham," Mahathir told reporters in Parliament this afternoon.