CIMB chairperson Nazir Abdul Razak said his comments about  1Malaysia Development (1MDB) were not controversial and wondered how these were speculated as a disagreement with his brother Prime Minister Najib Abdul Razak.

"I think my 15-year-old son can make that observation (on 1MDB) as well," he said when quizzed on his statement that the firm is causing negative investor sentiment.

"I just said it (1MDB) is causing negative investor sentiment and it is good to put the issue behind us.

"I don't think there is anything controversial about that," he added.

Pressed further as to whether he was saying there are no disagreements between Najib ( right ) and him, Nazir replied that differences between siblings are normal.

"We're brothers. There are always agreements and disagreements. It's healthy.

"Do you agree with everything your brother does? I rest my case. It's normal," he told a press conference in Kuala Lumpur after the 58th CIMB annual general assembly today.

There had been speculation of a rift between Najib and his siblings after they issued a joint statement in February refuting claims about family inheritance from their late father, Abdul Razak Hussein, who was the country’s third prime minister.

"We wish to put on record that Abdul Razak was a ​highly-principled man, well known to all ​who knew him ​for his frugality and utmost integrity​ and any statement or inference to the contrary would be totally false and misleading to his memory and to his service and sacrifices for the nation," they had said in the statement.

This came after the Prime Minister's Office attributed Najib's family wealth to "family inheritance" in a New York Times article which highlighted his purported lavish lifestyle.

The statement was signed off by all of Abdul Razak's sons namely Nazir, Johari, Nizam and Nazim with the exception of Najib.

Nazir has also emerged as a leading business figure in urging Putrajaya to put 1MDB right.

1MDB, which comes under the Finance Ministry led by Najib, has been in the spotlight over its whopping RM42 billion debt and business deals that appeared not to have benefited the company.