The arrested have been identified as Khalil, a resident of Hapur district, Aarif and Sharukh, both residents of Ghaziabad.
Acting on a tip-off, police laid a trap and arrested them from Vijay Nagar area near Jal Nigam Crossing last night. All the accused used to rob passengers near bus stands and also target women.
Police have recovered Rs 5,000 and three knives from their possession. "Police are interrogating them about hideouts of their accomplices, who would be arrested soon," he also added.