Malappuram(Kerala): The CPi(M) has demanded a thorough probe into the murder of Radha (49), a janitor working at the Congress block committee office in Nilambur.
Her body was found from a pond, and the post mortem report suggested the victim could have been sexually assaulted before she was stangulated.
Local police arrested Minister Aaryadan Muhammed's personal staff member and Congress office secretary, K M Biju (38) and his friend Shamsuddin (29).
The two were taken to the pond in which Radha's body was found for recording evidence.
The two have admitted to the crime and Radha's gold ornaments have been recovered from the house of Shamsuddin.
CPI-M State Secretary Pinarayi Vijayan has alleged that the arrests are being used to shield influential people.
Minister Aaryadan Muhammed has said he was ready for any probe.
In New Delhi, CPI-M leader Sitaram Yechury demanded that the probe be handed over to the CBI.