"When those in DMK makes frivolous complaints against executive members or district secretaries, leading to police taking actions, the party cannot just keep looking at that," he said in an apparent reference to some police complaints made by Alagiri loyalists against some DMK leaders.
Karunanidhi's remark comes hours after his elder son Alagiri demanded that the suspension of 10 of his loyalists be revoked for possible conciliatory talks.
Asked about the status of alliance talks between DMK and DMDK, he said he was not aware of it. Alagiri had in the morning stated that he was ready for talks with party high command if the suspension of his loyalists was revoked.
"Not only that, they should look into my complaint on irregularities in intra-party elections," Alagiri, who celebrated his 63rd birthday said. Soon after his suspension, Alagiri had said he would "speak his mind" on "what next" on his birthday after consultations with his supporters.
Karunanidhi had charged that Alagiri had said that party treasurer "M K Stalin would die in three months".