Islamabad, Pakistan (CNN) -- A government official and five of his children were killed Sunday morning in a blast in Pakistan's troubled northwest, authorities said.
The bomb was planted outside the home of Sarfaraz Khan, an official who helped administer the Sadda area in Kurram.
Kurram is one of seven districts that make up the Federally Administered Tribal Areas (FATA) in the country.
The 2 a.m. attack also wounded three other Khan family members: two women and a child, officials said.
The government is in the middle of an intense army offensive to rout militants from their haven along the country's border with Afghanistan -- where the tribal areas are located. The militants, in turn, have launched a series of deadly attacks inside the country in retaliation.
No one immediately claimed responsibility for Sunday's attack.