As Tamil Nadu emerges from the shock and mourning over the loss of Chief Minister J Jayalalithaa, questions are now being asked as to who really controls the reins of power in the state. O Panneerselvam may have been made chief minister, but is he indeed the sole authority? The active presence of Sasikala Natarajan, Jayalalithaa's aide, and her family members during the last rites, have raised concerns about multiple power centres - concerns borne out by an NDTV investigation this week, which found serious questions on the transfer of power in Tamil Nadu.