The Tamil Nadu government had ordered the copper smelter plant to be shut down in 2018 following a violent protest that led to the death of 13 persons in police firing.
The CM, who is also the AIADMK co-coordinator, has won from Edappadi four times (1989, 91, 2011 and 2016) and the region is among the strongholds of the ruling party.
"AIADMK is no longer Madam Jayalalithaa's party as she always kept her party away from BJP. Unfortunately, AIADMK has turned into Narendra Modi's slave now," said the AIMIM chief at a public rally in Chennai.
Her return to Tamil Nadu is being keenly watched as it comes at a time when the assembly elections in the state are likely to be held in the next few months.
K Palaniswami and O Panneerselvam in May 2018 had jointly laid the foundation stone for the memorial adjacent to that of party founder and late chief minister M G Ramachandran
Sasikala was in prison since February 2017 along with Ilavarasi and late Jayalalithaa's foster son V N Sudhakaran in connection with the Rs 66 crore disproportionate assets case.
In a statement issued here, RMM leader V.M. Sudhakar said those who are in RMM wanting to join a political party can do after submitting their resignation.
