Unidentified men hurled a grenade at the residence of All Manipur Working Journalists' Union President A. Mobi, just days after a militant group issued 'threat' to senior journalists.
The militants fled after hurling the grenade at around 9 pm on Saturday night when Mobi was present at the house, police said, adding that no casualty or injury had been reported.
Mobi is also the editor of vernacular daily Sanaleibak.
An AMWJU spokesman said that a particular militant group, the name of which was being withheld, had recently issued a press statement in which it had levelled charges against certain individuals and threatened them.
The group wanted the statement to be published in verbatim by the local media, he said. As the statement was against the guidelines of the Press Council of India, media houses refused to publish it, angering the outfit that threatened journalists with dire consequences for disobeying their diktat, he said.
After the grenade attack, a team of editors and senior journalists went to Home Minister Gaikhangam's residence late on Saturday night and apprised him of the incident.
Gaikhangam asked the police to nab the culprits but they were yet to be arrested, the spokesman said, adding that scribes have condemned the incident at an emergency meeting.
Official sources said security measures had been tightened around media houses and residences of the editors following instruction from the state Home Minister.
The AMWJU spokesman said several editors of local dailies received emails by this particular outfit cautioning them to be careful while moving on the roads.
Other militant outfits had also issued threats to media houses if their statements were not published, he said.