Kalabhavan Mani was undergoing treatment for liver and kidney diseases at AIMS for some time before he died on March 6.
With the exact cause of south-Indian actor Kalabhavan Mani's death still eluding investigating officers, Kerala DGP T P Senkumar on Friday said scientific probe would be needed to unravel the mystery.
"The investigation is going on in the right direction. There is no need to come to any conclusion hurriedly. We need to go about it in a scientific manner. We will go by it scientifically," the DGP told reporters here after holding talks with the investigation officers regarding the progress of the case.
The official also visited Mr Mani's outhouse, Padi, from where he was brought in a serious condition to the Amrita Institute of Medical Sciences (AIMS) hospital at Kochi on March 5, a day prior to his death.
DGP Senkumar also visited Mr Mani's residence and met the actor's family members.
45-year-old Mr Mani, who had carved a niche for himself in the Malayalam and Tamil film industry, was undergoing treatment for liver and kidney diseases at AIMS for some time before he died on March 6.
Police had registered a case of unnatural death after AIMS doctors said that traces of methyl alcohol were found in his blood.
The viscera samples of the actor, examined at the regional chemical examiner's laboratory at Kakkanad in Kochi had revealed presence of a dangerous insecticide 'Chlorpyrifos'.
Members of Mr Mani's family, including his wife Nimmi and brother RLV Ramakrishnan, had raised suspicion about the involvement of his friends and aides in his mysterious death.