The incident took place last night when the victim identified as Sudesh Jain, an accountant in a private firm, was on the way to the house of company owner Satya Narayan on his bicycle to hand over Rs 5 lakh cash to him, they said.
As soon as he reached near the owner's house, two armed persons opened fire and seized his bag. The victim died on the spot, police said.
After the firing, the assailants barged inside Delhi-Vaishali bus station and fled on a motorcycle which they had seized from a bystander, police said.
Gupta was admitted to a hospital while the victim's body was sent for post-mortem, they added.
"The accused are local residents and we have detained some persons for questioning," Supertindent of Police (City) Omprakash said.
A case has been registered in this connection and efforts are on to nab the culprits, they said.