Inspector-General of Police Abdul Hamid Bador said investigating officers were waiting for the right time to call them up.

“If they think they have been victimised or slandered, they should come forward to lodge reports; an investigation can be opened from this angle,” he told reporters after launching the Selangor police Taman Angkat Amanita programme at the Surau An-Nur field here today.

Hamid said the public could also lodge police reports if they felt distressed by the audio clip, which has gone viral on social media.

He said an investigation paper had been opened and a copy of the audio recording had been sent to a forensic laboratory to determine its authenticity.

Hamid, however, could not say how long the laboratory analysis would take.

“The findings of the analysis will be sent to the Attorney-General’s Chambers, for it to classify it accordingly. In whatever case, we will try to settle the matter fast.”

The audio clip contains a conversation between two individuals with voices resembling those of Zahid and Anwar, discussing matters related to the Umno general assembly last month.