The accused had allegedly looted Rs 35 lakh cash from a van belonging to a petrol pump at the Vasundhra Enclave, when the vehicle was on its way to a bank.
Acting on a tip-off, the police intercepted the accused -- Robin, Ankur and Pradeep -- all from Hapur district, while they were travelling on a motorcycle, Superintendent of Police (City) Akash Tomar said.
One licensed pistol, two country-made pistols, four live cartridges and Rs 1.33 lakh cash were seized from their possession, he added.