Natarajan was admitted to the hospital on Saturday with severe chest infection and was put on ventilator support.
From leading the team that arrested Uma Bharti to exposing V K Sasikala's privileges in prison, the 42-year-old IPS officer is not scared of anything.
At 70, going by hospital records made public, most age and health-related arguments put out against super-star Rajinikanth's entry into politics, before he withdrew citing a 2016 kidney-transplant, hold good for Sasikala, too, says N Sathiya Moorthy.