DMK Treasurer M K Stalin on Saturday sent a legal notice to MDMK founder Vaiko for his alleged remarks against the former in connection with the 2G spectrum allocation scam.

In the notice sent to Vaiko through his counsel, Stalin sought "unconditional apology" from the former within three days of receipt of the notice for making "defamatory statement" about him while speaking to the media on the 2G spectrum allocation scam in Madurai on Friday.