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. Last Updated: 07/27/2016

5 UN Staff Dead After Bomb Strikes Convoy in Afghanistan

KANDAHAR, Afghanistan -- A roadside bomb hit a UN convoy in southern Afghanistan's main city on Tuesday, killing four Nepalese guards and an Afghan driver, officials said.

The attack -- the deadliest for the United Nations in Afghanistan since the Taliban's ouster in 2001 -- followed an assault on a Danish aid group and a report accusing militants of targeting civilians.

Tuesday's victims were traveling in one of at least three UN vehicles passing through Kandahar when the blast hit their gray sport utility vehicle, said Esmatullah Alizai, Kandahar's provincial police chief.

The UN confirmed that four Nepalese contractors and an Afghan driver working for the UN Office for Projects Services died in the attack.

"Intentional attacks on civilians are a clear violation of international humanitarian law and the UN will be pursuing full accountability for those who are behind this," the UN said in a statement released in the capital, Kabul.

There was no immediate claim of responsibility.

The attack underlines concern that Taliban-led insurgents are operating even in the southern capital, despite the stationing of thousands of foreign troops in the region.

NATO-led forces are currently focused on clearing northern sections of neighboring Helmand province -- the world's biggest producer of opium -- of Taliban fighters in order to allow the renovation of a hydroelectric power plant.

Fixing the Kajaki dam is a flagship development project supposed to persuade Afghans to side with the feeble government of President Hamid Karzai.