"The superintendence of the Police Force... ... Arnab Goswami's Habeas Plea Against His Arrest In 2018 Abetment To Suicide Case -LIVE UPDATES From Bombay High Court

"The superintendence of the Police Force throughout [the State of Maharashtra vests in and exercisable by the State Government" - Desai sumbmits referring to Section 4 of Maharashtra Police Act.

So State govt has power to direct investigation.