A Mumbai woman and her Goa-based partner were arrested for allegedly robbing a businessman of his licenced revolver, gold chains and mobile phone cumulatively valued at Rs 4.75 lakh in Maharashtra's Thane district, a police official said on Monday.

As per the complaint by the victim, he was befriended by a woman on social media and they met for lunch on December 21 at a hotel in Dombivali's Khoni village, where he was robbed.