Dhinakaran had "no authority or qualification" to remove those appointed by late AIADMK chief Jayalalithaa from party posts and his announcements in this regard were not binding on party affairs, a resolution adopted at the meeting said.
The meeting, attended by Ministers, MLAs and senior functionaries, also adopted a resolution to soon convene a general council meeting that could pave the way for jailed party chief VK Sasikala's ouster.
He has also been trying to reassert his position, effecting changes in the party office-bearers, especially district secretaries, a key post in the Dravidian party's hierarchy, bringing in his supporters.
Incidentally, Dhinakaran had yesterday announced removal of Palaiswami as the party's Salem District Secretary.
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The Dhinakaran camp pooh-poohed today's resolutions, saying only the party's general secretary had the authority to convene the general council, the party's decision-making body.
The first of the four resolutions adopted at the meeting said Dhinakaran had been "removed" as deputy general secretary on August 10, 2017 at the then meeting headed by Palaniswami.
Dhinakaran being appointed as deputy general secretary by Sasikala before proceeding to a Bengaluru jail (in February) to serve her term in a disproportionate assets case, was not authorised by relevant party bye-laws, it said.
Further, the Election Commission had also not accepted his appointment and these had been explained to Dhinakaran by "functionaries appointed by 'Amma' (Jayalalithaa)," it said.
"With the Election Commission so far not recognising V K Sasikala's appointment as general secretary, which was done as an interim measure, appointment of Dhinakaran as deputy general secretary by her and his getting involved in party affairs is against party laws," it said.
Those appointed by Jayalalithaa, as well as elected through organisational polls, will continue in their respective positions, it said.
The resolution on convening the general council said it was being done on demands from party functionaries and General Council members.
On the day of merger, the party's Rajya Sabha MP R Vaithilingam had said steps will be taken for the removal of Sasikala, close aide of Jayalalithaa.
Today's meeting also decided to initiate legal steps to ensure that party-backed media "Namathu Dr MGR" and "Jaya TV" "continued to hail" Jayalalithaa, seen as an attempt to wrest control of them from the Dhinakaran camp.
Since the confrontation between Palaniswami and Dhinakaran, the two media arms have openly sided with the Sasikala camp.
Another resolution said it has been resolved to strive hard to "protect" the party and its government.
The meeting saw absence of some of the AIADMK MLAs and MPs, besides 21 of the legislators supporting Dhinakaran.
Asked about this, party sources said some of the MPs were members of parliamentary standing committees and hence could be in other states as part of their work.
It was not clear how many MLAs and MPs attended the meeting, chaired by Palaniswami to discuss the way forward to tackle internal crisis in AIADMK which has 134 MLAs in the 234-member state Assembly with one vacancy.
The pro-Dhinakaran MLAs are camping in the neighbouring Union territory of Puducherry since meeting Governor Ch Vidyasagar Rao and expressing lack of confidence in the chief minister on August 22.
Meanwhile, sources in the unified AIADMK said a team of ministers might approach the Election Commission to withdraw the affidavits filed in favour of Sasikala by the Palaniswami camp before the merger.
The erstwhile Panneerselvam faction had earlier approached the EC against Sasikala's appointment as party chief on December 29 last year following Jayalalithaa's death.
Making light to today's meeting, key rebel camp member and MLA Thangatamilselvan said the party's general secretary alone had the authority to convene the general council.
Since the party chief was now in jail, only Dhinakaran can do so, he told reporters in Puducherry.
The 21 MLAs and district secretaries supporting Dhinkaran were ready to attend today's meeting but were not invited, he claimed.
He also said two media arms of AIADMK were "private properties" and cannot be taken over by the Palaniswami camp.
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