Manipur minister Kashim Vashum said he and his family members were not at home when the grenade exploded.
The move comes after the Manipur high court had directed the state government to operationalise mobile towers, on a trial basis, in all those district headquarters which have not been affected by the ethnic clashes.
Pakistan-based terror outfit Jaish-e-Mohammad chief Maulana Masood Azhar and his brother Abdul Rauf Asghar, mastermind of IC-814 hijack case, are among four persons identified by Indian intelligence agencies as 'handlers' behind the recent Pathankot attack.