A 21-year-old man working as a caretaker to an elderly couple allegedly siphoned off Rs 1 lakh from their bank account using internet banking in the western suburb of Andheri, police said on Monday.

The police recently arrested the accused, Mohammed Shamim, who was employed as caretaker to an elderly couple living in the Seven Bungalows locality of Andheri, an official from Versova police station said.