A South Korean national was allegedly molested while boarding a bus in the Kolkata's Thakurpukur area on Monday.
The accused was arrested after the victim lodged a compliant at the Burrabazar police station, Deputy Commissioner of police (central) D P Singh said.
The accused was arrested under section 354 of the IPC (assault or criminal force to woman with intent to outrage her modesty) and will be produced in court today, he added.