The attack took place at around 11:00 a.m. local time in provincial capital Pul-e-Alam city.
Among the killed was Akram Nejat, head of provincial Appellate Court, the police official confirmed.
"The attack took place when an official ceremony was underway in the building. Nejat was appointed recently to serve as the chairman of provincial court but he was killed in the incident," the police official noted.
Two suicide bombers were also killed as a result of the attack, he said. At least one explosion occurred inside the building's yard, he said. Link