Guwahati, Nov 27: Ulfa militants fired a rocket at the official house of a private company executive in the trouble-torn Tinsukia district of Upper Assam last night, police said today. There was no injury to anyone in the attack in the PP Factory Officers' Colony in Doomdooma, they said. The incident was not connected with the ongoing anti-Bihari violence, police said, adding the ultras fired at the house of the factory's commercial officer Subendu Uzir and partly damaged the kitchen. Police has recovered the tail of the rocket from the area. Bureau Report