Taliban militants launched a large-scale attack involving the United Nations in the centre of the Afghan capital Kabul yesterday, sparking a five-hour battle with security forces.

A plume of smoke hung over Kabul after the attack was launched, with the sound of .50 calibre heavy machine guns, rocket-propelled grenades and sniper fire clearly audible throughout the city centre as night fell.

An Afghan police officer was killed and 10 other people were wounded during the attack, which began at 4pm with a suicide car bomb outside a compound used by the International Organisation for Migration (IOM), Afghan police said.

While the IOM is not part of the UN, it is affiliated with it in Afghanistan.

The attack came eight days after six American soldiers and civilians and nine Afghans were killed in a suicide car bombing in Kabul.

The Taliban, fighting to expel Western forces and establish Islamist rule in Afghanistan, claimed responsibility for yesterday’s attack, saying a “rest house” used by the US Central Intelligence Agency (CIA) had been attacked.

After the bombing, about six Taliban fighters engaged in a firefight with nearby guards, officials said.

Two were killed and the remaining three or four militants entered an unused building across the road from the IOM compound and continued to fight.

There were at least four large blasts during the course of the evening, and witnesses said that at 9pm exchanges of fire were still going on between the attackers and Afghan forces supported by Norwegian special forces.

“As a result of the attack, three IOM staff and one International Labour Organisation (ILO) staff were wounded,” UN spokesman Eduardo del Buey told reporters in New York.

He said one of the IOM personnel was in serious condition, and that all UN staff in Kabul had been accounted for.

The ILO is a subsidiary of the United Nations and operates in Kabul under the banner of the UN Assistance Mission in Afghanistan (UNAMA).

Such attacks reinforce international concern about how the 352,000 members of the Afghan security forces will cope with the insurgency after most foreign Nato-led combat troops leave by the end of next year.

Insurgent attacks against civilians, government workers and Afghan security forces have increased since the Taliban announced their so-called spring offensive late last month.

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