An offence has been registered against three persons in Maharashtra's Nagpur for allegedly duping a man of Rs 25 lakh in an investment scheme, police said on Friday.

The complainant, who hails from Balaghat district of Madhya Pradesh, has alleged that the accused had promised returns to the tune of Rs 1.25 crore in two days if he invested Rs 25 lakh in their money doubling scheme, an official said.