According to API S B More of Bazarpeth Police Station in Kalyan, the incident took place late last night after the victims consumed sweets at the ritual in Koni village following the demise of one Sakharam Balaram Mhatre.
Soon after the ritual, guests and relatives of the deceased in the village including women and children began complaining of giddiness and started vomiting, police said.
They were immediately rushed to nearby hospitals for treatment. Later, except for 7-8 people, others were discharged, More said.
Also, offences have been registered under section 272, 273 of the IPC and Food Safety and Security Act 2006 against shop owner Hydera Ali Rasulbhai Palsania, police said.
However, no arrests have been made so far and investigations are underway.