The former Bandra MLA and Ajit Pawar-led NCP leader was shot at and grievously injured in Nirmal Nagar area in Bandra East at around 9:30 pm on October 12

He died some time later at nearby Lilavati hospital

Haryana resident Gurmail Baljit Singh (23), Uttar Pradesh native Dharmaraj Kashyap (21), Harish Kumar Nisad (26) and Pune-based Pravin Lonkar (30) were produced before Additional Chief Metropolitan Magistrate (Esplanade court) V R Patil on Monday at the end of their initial remand

Police sought further remand saying the accused were not cooperating with the investigation and were giving misleading information

As per the prosecution, Singh and Kashyap, as well as wanted accused Shivkumar Gautam, fired at Siddique (66), while Pravin Lonkar's brother Shubham is allegedly associated with jailed gangster Lawrence Bishnoi

He and other wanted accused had conspired to carry out the shooting and had supplied arms to the gunmen, police said

Nisad, a scrap dealer in Pune, provided financial help for the operation, police said