The bomb disposal squad detonated the bomb near Pungdongbam Awang Leikai Water Supply.
The bomb was disposed of at 9:10 am at Awa Ching, Keirao, Imphal East.
The arms and ammunition were recovered from a residence of one Thangjalet Haokip located at Moreh Ward no.7, S Moljol during a search operation conducted at around 5:30 pm.
The investigation has revealed that the chargesheeted accused persons were part of deep rooted conspiracy to execute terrorist acts with the aim to terrorise the general population.
A bomb disposal squad from Manipur Police retrieved the grenade which reportedly did not have a detonator.
The two men arrested in hand grenade attack cases were accused in several bomb attack cases, police sources said.
At least three vehicles which were parked at the courtyard were damage during the incident.
A Chinese made hand grenade was found in front of a grocery shop located at Bashikhong Wangkhei Loumanbi, Imphal East.