The Malaysian Anti-Corruption Commission (MACC) has yet to question Prime Minister Najib Abdul Razak over the RM2.6 billion donation he received, more than two months after the graft buster said it would.
In a written parliamentary reply to Hanipa Maidin (Amanah-Sepang), Minister in the Prime Minister's Department Paul Low said Najib's statement would be taken when necessary.
"As of now, the prime minister's statement has not yet been taken and it will happen when the time comes," Low said in the written reply.
He also said the probe was still ongoing.
At a press conference in the Parliament lobby, Hanipa said the delay was not a good sign.
"The answer is as though they are not investigating. When are they going to call Najib? This is a national and international issue.
"It's been more than two months and they have not called him. The prime minister is the prime person to call," Hanipa said.
In a statement on Aug 5, the MACC said it had questioned the mysterious Middle Eastern donor who gave the RM2.6 billion, and planned to get Najib's statement as well.
The RM2.6 billion is reported to have made its way into Najib's personal accounts shortly before the 2013 general election.
Najib has repeatedly denied using the money for personal gain, and his deputy Ahmad Zahid Hamidi said the donation was made as a sign of gratitude for Malaysia's efforts in combating terrorism.