Politically, the verdict in favour of AIADMK chief is seen as a set back for the DMK as it has been aggressively using the Disproportionate Assets case and the conviction of Jayalalithaa by a trial court last year to target the ruling party.
With Assembly polls just a year away, the judgement has stunned the DMK which is now looking at both legal and political options to take on the ruling party, DMK sources said.
"Thalaivar (party president) is seized of the whole issue, he will make it known, we cannot say anything more now" a senior party leader told PTI when asked on party line after Jayalalithaa's acquittal.
Consultations were on with top leaders to fine tune political strategy and holding meetings with legal experts, he said.
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Karunanidhi would formally state DMK's stand on the issue of going for any appeal against the verdict exonerating Jayalalithaa, he added.
For the DMK, which is still battling to ward off the 2G Spectrum scandal tag, the conviction of Jayalalithaa by a trial court last year came like a boon to target the AIADMK with a new found vigour.
In a statement, Karunanidhi amply made clear his displeasure, quoting appeal court proceedings, and posing some questions and said "this is not the final judgement.