(Al Jazeera) – At least 10 people have been killed and another 10 wounded in an attack at a government building of the eastern Afghan city of Jalalabad, local officials said.  Armed men entered an office of the education department in the provincial capital of Nangarhar at around 9:30am (04:30GMT) on Wednesday, setting off at least two big explosions and sparking an hours-long battle with security forces.