Hand grenade kept at Manipur BJP leader's house

Unidentified persons allegedly kept a hand grenade in the residence of vice-president of the BJP's Manipur unit Manoharmayum Boris Sharma in Imphal East district, the police said today.
Who kept the hand grenade in Boris Sharma's residence yesterday and why was not immediately clear, the police said.
The BJP leader's residence had been the target recently also when three live bullets were kept inside.