The attorney-general (AG) has been asked to explain why Malaysia's 1MDB investigations have yet to yield results, when Singapore has already sent someone to jail in a related case.

"Other countries have not only completed their probe but also completed the trial process.

"Those responsible are already serving sentence. But here we are yet to begin.

"This certainly does not reflect well on our attorney-general. He must explain," said Puchong MP Gobind Singh Deo in a statement today.

He cited former BSI Singapore wealth planner Yeo Jiawei, who was sentenced to 54 months jail after he pleaded guilty to money laundering and cheating charges linked to 1MDB on Wednesday.