Bukit Aman criminal investigation department director M Kumar said the witnesses comprised three of the victims’ relatives and four medical officers.

Kumar said the victims’ relatives and lawyers went to Bukit Aman this morning, where they also handed over an audio recording believed to be related to the incident.

“A sample of a witness’s voice was also taken with the aid of CyberSecurity Malaysia for analysis,” he said.

Earlier, lawyer Rajesh Nagarajan, who represents the victims’ families, said they were dissatisfied with the meeting with the police.

Rajesh said that despite deputy commissioner of police Fazley Ab Rahman’s assurance that the investigation would be conducted transparently, they were not given answers to key questions.

These pertained to the nature of the investigation, whether the officers involved have been suspended, and who is heading the special task force looking into the case.

The audio recording handed over today follows allegations that M Puspanathan, 21, T Poovaneswaran, 24, and G Logeswaran, 29, were killed “execution-style”.

Melaka police chief Dzulkhairi Mukhtar had initially claimed that the trio were serial robbers who had attacked an officer with a parang.