Ramnagar police started a search operation on Monday when some youths informed them that they found cartridges in the drain which flows into Ramala tank on the outskirts of the city.
Interestingly, this is the fourth time cartridges have been found in the area.
In 2004, as many as 3,324 cartridges were recovered from the banks of Ramala tank.
In 2005, 4,447 cartridges were found, and another 2,896 cartridges were found in 2009.
Ramnagar Police Station SHO Pramod Giri said workers of sanitary department of municipal corporation have been deployed for the search.
Samples of the rounds would be sent to Ordinance Factory, Pune, for testing, Giri added.