The police on Monday said that a case has been registered against four persons in Maharashtra's Thane district for allegedly duping a woman of Rs 4 lakh after promising to double her investment in a fortnight, reported news agency PTI.

Based on a complaint, the Ambernath police have registered a first information report (FIR) under sections 318(4) (cheating) and 316(2) (criminal breach of trust) of the Bharatiya Nyaya Sanhita (BNS), an official said.