The bomb went off near the entrance of the building in Anshas village, reports said.
According to reports, the building was partly damaged in the blast.
"Three men left a car laden with 20kg of explosives by the entrance to the building on Sunday morning, and detonated it from a distance with a remote control," Aljazeera reported quoting an Egyptian army spokesperson.
No group has claimed responsibility for the attack so far.
--IBNS (Posted on 30-12-2013)