Nehru Centre was established in 1972 at Worli in Bombay. The Mumbai Metropolitan Region Development Authority (MMRDA) was set up on 26 January 1975 by the Government of Maharashtra as an apex body for planning and co-ordination of development activities in the Mumbai metropolitan region. Nehru Science Centre, India's largest interactive science centre, was established in 1972 at Worli in Bombay. In August 1979, a sister township of Navi Mumbai was founded by City and Industrial Development Corporation (CIDCO) across Thane and Raigad districts of Maharashtra to help the dispersal and control of Mumbai's population. The Great Bombay Textile Strike was called on 18 January 1982 by trade union leader Dutta Samant, where nearly 250,000 workers and more than 50 textile mills in Bombay went on strike. On 17 May 1984, riots broke out in Bombay, Thane, and Bhiwandi after a saffron flag was placed at the top of a mosque. 278 were killed and 1,118 were wounded. The Jawaharlal Nehru Port was commissioned on 26 May 1989 at Nhava Sheva with a view to de-congest Bombay Harbour and to serve as a hub port for the city. In December 1992 – January 93, over 1,000 people were killed and the city paralyzed by communal riots between the Hindus and the Muslims caused by the destruction of the Babri Mosque in Ayodhya. A series of 13 co-ordinated bomb explosions took place in Bombay on 12 March 1993, which resulted in 257 deaths and 700 injuries. The attacks were believed to be orchestrated by mafia don Dawood Ibrahim in retaliation for the Babri Mosque demolition. In 1996, the newly elected Shiv Sena-led government renamed the city of Bombay to the native name Mumbai, after the Koli native Marathi people Goddess Mumbadevi. Soon colonial British names were shed to assert or reassert local names, such as Victoria Terminus being renamed to Chhatrapati Shivaji Terminus on 4 March 1996, after the 17th century Marathi King Shivaji.