PUL-E-KHUMRI, Afghanistan, July 4 (Xinhua) -- Militants have attacked and killed three government employees in Burka district of the northern Baghlan province on Wednesday, district Governor Mawlawi Shamsul Haq Shahab said.

"A group of armed militants attacked a house in Burka district early this morning and opened fire killing three government employees and injuring two others," Shahab told Xinhua.

All the victims belonged to the department in charge of issuing National Identity card to eligible voters ahead of parliamentary elections slated for Oct. 20.

Although no group has claimed of responsibility, the district government didn't rule out the involvement of Taliban militants who are active in parts of Baghlan province including the troubled Burka district.

Taliban militants abducted four employees of National Identity card department from Baharak district of the northern Takhar province a couple of days ago but freed three of them on Wednesday, according to local officials.?