Attorney-general Mohamed Apandi Ali, former treasurer-general Irwan Serigar Abdullah, and former MACC chief Dzulkifli Ahmad have been banned from travelling abroad.
Malaysiakini has run their MyKad numbers against the Immigration Department blacklist checker and found that the three do not fall under the "Tiada halangan" (no restriction) category.
Apandi has been accused by Prime Minister Dr Mahathir Mohamad of hiding evidence related to the 1MDB scandal, although the former has denied the allegations. The attorney-general has begun a 30-day unrecorded leave today.
Irwan Serigar is currently the 1MDB chairperson. He was also a key witness in both Public Accounts Committee investigations into the company.
Dzulkifli took MACC’s reins from Abu Kassim Mohamed on Aug 1, 2016. Dzulkifli's role in the 1MDB investigation is uncertain.
In 2015, Abu Kassim was part of the special task force assigned to investigate 1MDB matters, which also included then Bank Negara governor Zeti Akhtar Aziz, then attorney-general Abdul Gani Patail and then police chief Khalid Abu Bakar.
All four were eventually removed from duty by the Najib administration, while Abdul Gani was removed in dramatic fashion in 2015, at the height of domestic investigations into 1MDB.
Since coming to power last week, Mahathir had pledged to reopen investigations on 1MDB, among other scandals.
Sources told that many individuals involved in the 1MDB affair have been barred from travelling abroad.
Mahathir has confirmed that he had instructed the Immigration Department to bar his predecessor Najib Abdul Razak and wife Rosmah Mansor from leaving the country as well.