Five killed in an explosion in the building of the UN in Pakistan

The bomb explosion at the United Nations building in Islamabad killed at least five people and six injured, tell the Pakistani officials, the BBC broadcasts.
"Killed two women and one Pakistani nationality Iraqi. Six persons were injured and two are in critical condition," said the BBC's representative in the Police Tahir Alam, adding that five people died. He said that the police determined that the suicide bombers managed to activate the time bomb in the lobby of the building where the premises of the World Food Program. Alam said that, because they found parts of the body blow, determined that the attack was carried out suicide bombers.
Pakistani Interior Minister Rehman Malik said the attacker wore a uniform border forces and asked the security guard to let him go to the toilet. Deputy Director of the World Food Program Amir Abdullah confirmed that three of their officers died in the explosion. He described the attack as "a terrible tragedy not only for the UN but also for all humanistarne workers in Pakistan."
"We express our deepest condolences to the families, friends and colleagues killed, who helped the most vulnerable and most vulnerable segment of the population," said Abdullah, the BBC broadcasts.
Unnamed UN Officer, who was in the building when the explosion occurred, told AFP that she saw a lot of injured colleagues.
"I was upstairs when heard the explosion. When I stepped down I saw colleagues oblivene blood. The most difficult cases are immediately transported to the hospital," she said.
Hundreds of people gathered at the scene, there agencies say that this is probably one of the bloodiest rebel attack in the last three months. Front of the UN are members of special police forces, with dogs searched the ground.
Last week, at least 16 people were killed in two suicide attacks in the north-west Pakistan. BBC correspondents indicate that these attacks show that the Taliban renew their strength and continue seruju bombings in this country.