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.