The search came two days after the DMK announced its decision to pull out of the Congress-led United Progressive Alliance (UPA) over the central government's stand on supporting a US-sponsored resolution censuring the Sri Lankan government on attrocities against Tamils during the civil war against the LTTE.
It is reliably learnt that the CBI registered the case in New Delhi and the raids were in connection with the import of cars and payment of customs duties.
The CBI also raided Stalin's friend Raja Shankar's house here in this connection.
Reacting to the raids, Stalin told reporters that it was mere political vendetta and he would face all the legal issues.