The Umno disciplinary board is investigating Hishammuddin Hussein following a complaint, said Mohamed Apandi Ali.
The disciplinary chairman said more details will be revealed when the investigation is completed.
“Like a police investigation, the details of our investigation will be kept secret. I confirm that there is such an investigation but I will not comment further or give more details until the investigation is completed,” he told The Malaysian Insight.
Hishammuddin has been under a cloud of suspicion in the party after he recently met with Prime Minister Dr Mahathir Mohamad.

His action is perceived to be an act of disloyalty as well as a breach of party rules.
Apandi urged party members to remain calm while the probe is underway.
“We are above politics. The disciplinary board is like a judge and we don’t play politics. We will investigate no matter what.
“If we find nothing wrong then the matter ends there.” – TMI