"I have asked the state government to recommend a CBI probe into the rape and murder. It is a matter of concern that the culprits have not been arrested so far," Commission's Chairman P L Punia told PTI over phone from New Delhi.
Punia, who had visited the victim's mother in hospital and her house in Perumbavoor earlier this month, said the state police had told him that the culprits involved in the crime would be arrested soon.
Punia said he had on Friday last written to the state government seeking CBI probe into the rape and murder of the 30-year-old law student on April 28 in her house.
"I have also sought an Action Taken Report on the steps taken by the state government in giving Rs 10 lakh compensation it announced for the victim's family and providing a government job for the victim's sister," he said.
The authority had sent showcause notices to five senior officers related to the complaints about "lapses" in the investigation, he said.
The rape and brutal murder of the woman became an issue in the just concluded assembly elections in the state with the opposition attacking the UDF government over the handling of the case.
