The bureau has initiated a probe into the scam involving staff of the Public Health Engineering Department (PHED) and the store at Malviya Nagar here, they said.
"We have got information that the Central Purchase Store staff had supplied LED bulbs to the PHED at inflated rates through a Jaipur-based contractor. The financial irregularity amounts into crores," ASP ACB Bajrang Singh Shekhawat told PTI.
"The ACB has seized papers revealing Rs 3 crore transaction in the preliminary investigation," Singh said, adding the matter is being probed.
The staff was involved in irregularities from last two years, Singh added.