Attorney-General Abdul Gani Patail today classified the death of 22-year-old police detainee Kugan Ananthan as murder.

It is learnt that investigations are underway.

Earlier, Inspector-General of Police Musa Hassan said that a full investigation will be carried out into Kugan's death.

According to him, a thorough probe will be undertaken although the post-mortem report found that Kugan had died due to fluid in his lungs.

"We will not cover up anything," he told reporters in Kuching.