What led to the split of AIADMK & BJP in Tamil Nadu?

The AIADMK has decided to end its alliance with the BJP, which has raised doubts about the sustainability of this separation. The dissolution of the alliance has been attributed to BJP state president K Annamalai. There have been various incidents and exchanges between the two parties, with AIADMK leaders condemning Annamalai’s remarks and BJP leaders denying their current alliance with AIADMK.