Officials said that hundreds of local residents including women launched a sit-in protest against the incident this morning.
Assailants have been attacking the houses of politicians - both ruling and opposition - in the past few weeks by hurling grenades or bombs at their houses.
Sources said security and police forces have been alerted by the state government to prevent any untoward incident during the coming Manipur Assembly elections in February next year.
(Published 19 December 2011, 07:43 IST)