Police recovered a grenade planted near the gate of a building at Brahmapur Bheigyabati Leikai in Imphal East district of Manipur.
Police also recovered along with the grenade a hand written note reading "Madam this is the last warning. Contact us within five days" on Tuesday.
The building belongs to a woman.
The note was purportedly signed by a leader of the proscribed militant outfit Kangleipak Communists Party (Noyon).
The grenade was later defused by the bomb squad.
Police has registered a case at the Porompat police station and started an investigation.
Disclaimer: No Business Standard Journalist was involved in creation of this content
