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.
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His death resulted in a massive public outcry, with various quarters accusing the police of foul play.
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It is learnt that the police have refused permission for a second post-mortem.
'Sack Selangor Police Chief'
The family's lawyer Gobind Singh told Malaysiakini that he will be seeking a court order on Wednesday to compel the authorities to conduct a post-mortem.
"We are in a strange situation where the police says the family has the right to a second post-mortem yet insists that we must obtain a court order.
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The family also submitted a memorandum to the IGP at the federal police headquarters in Bukit Aman this afternoon, urging for action to be taken against the "police personnel responsible" for Kugan's death.
The memorandum also called for Selangor police chief Khalid Abu Bakar's dismissal for allegedly trying to "deceive the public."
Following this, three Pakatan Rakyat MPs and a MIC Youth representative held a short meeting with Federal CID assistant director SAC II Mohd Rodwan Yusof.
According to Gobind, Mohd Rodwan promised the delegation that the police will decide in 24 hours on whether to allow the second post-mortem.
Mass Protest Threat
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"If they do not respond, we will mobilise people on the scale of the Nov 24 (Hindraf) rally next week. We are ready. We have people all over the country," he said.
MIC Youth secretary G Shivarraaj told reporters that the youth movement will work together with other groups to pursue this matter.
Earlier, some 50 people held a short protest near the entrance of the federal police headquarters.They chanted, 'We will fight till the end' and 'Polis Pembunuh' (police are killers).
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Responding to this, Musa said Kugan's family should not have gone into the mortuary to view the body as it could be considered tampering with evidence.
"This should not have happened and we will also investigate it as a report has been lodged," he said.
The police said yesterday they will take statements from two deputy ministers who were present when the crowd barged into the mortuary. [See photos, right, and video below]
'Cops Could Be Charge Next Week'
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He said Abdul Gani had informed him about the decision this morning and asked him to convey it to the family.
"Abdul Gani has instructed the police to conduct a thorough probe and if the investigations proceed smoothly, there is a big possibility that those involved could be charged in court next week," he was quoted as saying by Bernama.
Murugiah also appealed to Kuhan's family to extend their full cooperation.
"We have to work together in this matter, we cannot be accusing any quarters," he said.
VIDEO l 2 min - WARNING! Due to the distressing nature of the following material, viewer discretion is strongly advised.
VIDEO | 10 min