8,573 Ganesh idols immersed at 189 spots as Navi Mumbai marks peaceful visarjan. A total of 8,573 Ganesh idols were immersed at as many as 189 immersion spots across Navi Mumbai on Anant Chaturdashi, Friday, with Navi Mumbai Municipal Corporation making safety, sanitation and environmental arrangements for ceremonies that continued until 5.30 am on Saturday. The event, which began early afternoon on Friday, remained peaceful.