The immersion of the 'one-and-half day' Ganesh idols began in Mumbai on Saturday, with 6,116 idols making their way into lakes and other artificial water-bodies till 6 pm, an official said.

He said the idols immersed comprise 55 'sarvajanik' or public ones, 6047 household ones and 14 'hartalikas' (idols made to celebrate Teej falling in the monsoon), with 3,600 idols being immersed in artificial lakes.