Imphal West police made the arrests for the grenade attack, said Superintendent of Police H. Jogeshchandra and added that all have "confessed" to the attack.




Nipco, however, has denied any connection with the attack.

Jogeshchandra said the police have also recovered one two-wheeler, Rs 43,000 cash, a Chinese-made 9 mm pistol with two live rounds and two 0.38 pistols with 15 rounds of ammunition, besides mobile phones and incriminating documents.