DMK chief Karunanidhi today sent a legal notice to MDMK chief Vaiko warning of civil and criminal proceedings against him for his allegation that the former's party had offered money to DMDK over forging electoral alliance.

"On behalf of our client M Karunanidhi we call upon you to withdraw your false accusation made against our client and express your regret," Advocate R Dhevi said in the notice to Vaiko which was circulated to the media.