The accused were identified as Mohd Nasir, 25, from Moradabad, Rajubabu, 40, from Mumbai, Altaf Khan, 29 and Sarafraj Alam, 25, from West Bengal, Jaipur Police Commissioner J S Rao said.
In the first robbery, an inter-state gang robbed a businessman in Motisingh Bhomion-ke-Rasta and fled with his bag carrying a cash of Rs 60 lakh on November 15, 2014, he said.
In the second incident the same gangsters looted 1 kg of silver from a businessman in Johri Bazar on January 15, Rao said.