A cash amount of Rs 1.10 lakh was looted at gunpoint from a courier agency in Madhu Vihar market by three unidentified robbers on June 21.
Police made frequent raids and arrested four persons arrested yesterday from Sultanpuri and Begumpur areas of East Delhi, said Ajay Kumar, DCP East district.
Those arrested were identified, as Dipak Gupta, Sarfuddin, Dipak aka Tappu and Mukesh.
On examining the CCTV Footage placed at the lane where the courier agency is situated and nearby areas by the police, some suspects roaming around there for over an hour, were identified, he said.
The motorcycle used in the crime has been recovered. Further raids are being conducted to apprehend remaining robbers of the gang and recover the looted cash, the officer added.