Replying to a special call attention motion made by Left parties in the Assembly, Chief Minister J Jayalalithaa said the case was being transferred to CBCID.
Residences of former CPI(M) Tuticorin District Secretary Kanagaraj and the party's Kovilpatti Town Secretary Srinivasan were allegedly attacked with petrol bombs by unidentified persons in January and March respectively this year.
CPI(M) cadres agreed to call off their demonstration demanding the arrest of those involved in these incidents on her intervention, she said.