Gandhinagar police on Tuesday arrested three persons, including the caretaker of the victim, in the robbery case reported at SBI colony last week.
P. Saikumar Goud, an electrician, had entered the house premises under the guise of checking a portion on the first floor for rent, while I. Dinesh Kumar, a CCTV technician, waited at a distance with the motorcycle.
Police said the plan was indeed hatched by K. Raju, the caretaker of the sexagenarian couple.
