NCP leader Baba SIddique has passed away due to bullet injuries, sources said.
Three unidentified persons fired at and injured Baba Siddiqui of the Ajit Pawar-led NCP in Mumbai's Bandra East on Saturday evening.
The former state minister has been admitted in Lilavati Hospital nearby with grievous injuries, a police official said.
The firing took place outside his MLA son Zeeshan Siddiqui's office near Colgate ground in Nirmal Nagar, the official added.
Maharashtra Chief Minister Eknath Shinde said Mumbai police commissioner Vivek Phansalkar had told him that two alleged shooters have been taken into custody.
One of them is from Uttar Pradesh and the other from Haryana, while a third accused fled from the spot, the CM told TV channels.
Deputy Chief Minister Devendra Fadnavis, who also holds the home portfolio, arrived at Lilavati Hospital some time after the incident.
Siddiqui, a three time-former MLA, had recently joined the NCP from the Congress.