The explosion hit the Egyptian city of Mansoura, destroying the police building.
Intelligence sources report the bomb as a car bomb.
The explosion ripped the front of the building destroying the the building and the surrounding structures.
The blast, which the reports said was caused by a car bombing, destroyed part of the headquarters and damaged some surrounding structures.
Terrorism has become a global challenge as more militant groups take up the strategy to push their agenda.
The evolving strategy of terrorism has become a very complex security challenge.
Billions of dollars are being spent across the world in counter-terrorism.
Egypt is faced by a unending political struggle since the toppling of Hosni Mubarak who led the country to economic and political stability for decades.