He passed away at Loknayak Jaiprakash Hospital at New Delhi this evening, sources said.
Mahwish, the widow of Abdul Hakim, came into news last years after they voiced their fears of being murdered during the recording of Amir Khan's reality show Satyamev Jayate.
Later, in November, Abdul was shot dead in Bhargardi village.
Opposing high handedness of a police officer, Mahwish and seven members of her family had tried to immolate themselves in Bhatgarhi village on Wednesday.
The erring Kotwal of Dehat police station was transferred last evening, police said.