Three robbers had barged inside the grocery shop of one Raman Kumar and looted Rs two lakh from a trader at gunpoint.
The protesters claimed to continue with their protest till all three robbers were arrested and the loot amount recovered.
Vijay Somany, chairman of Rashtriya Nav Chetna, a voluntary organisation, slammed the police for its alleged failure to check criminal activities.
Meanwhile, police arrested one Rahul, a resident of Khalilpur village, for his alleged involvement in the loot.
He was today produced in a local court which remanded him in police custody for two days.
The two others involved in the crime would be soon arrested, SSP Bharti Arora told reporters.
