The incident took place last night when Mahesh, a resident of Indirapuri colony, was returning home after collecting money from his customers, they said.
"Mahesh was walking towards a bus stand when five armed assailants on two motorcycles stopped him and asked him to give his money.
"One of the accused hit him on the head with the butt of a gun when he refused to give. After injuring Mahesh, the accused fled away with Rs 45,000," a police officer said.
A case has been registered against the unidentified persons at Loni police station.