Four coalition troops have been killed by a bomb in southern Afghanistan, officials said today.

A coalition statement said two more soldiers were seriously wounded when the bomb went off today as they conducted operations in the southern province of Kandahar.

The coalition did not release the nationalities of the victims.

Afghanistan is seeing a resurgence of violence even as the US and Nato have poured thousands of new troops into the country.

Last year, more than 8,000 people were killed in insurgency-related attacks in Afghanistan – the most since the 2001 invasion – and violence has claimed more than 1,500 lives this year.

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19/11/2009: Karzai pledges to root out corruption
18/11/2009: Obama doesn't want to pass Afghan conflict to successor
17/11/2009: Britain 'ready' to send more troops to Afghanistan
17/11/2009: Brown urges 'clear timetable' for Afghan security handover
13/11/2009: Germany to send more troops to Afghanistan
13/11/2009: Taliban claims responsibility for suicide bombing
12/11/2009: Afghanistan dog of war missing for a year found
12/11/2009: US envoy objects to troop increase in Afghanistan
11/11/2009: White House denies troops decision is imminent
08/11/2009: Brown pledges to equip Afghan troops
08/11/2009: Probe into reports that airstrike killed civilians
07/11/2009: Nato airstrike kills Afghan soldiers
07/11/2009: UN urges Karzai to fight corruption
05/11/2009: UN to relocate 600 staff after Afghanistan attack
04/11/2009: Taliban take blame for killing five British soldiers
04/11/2009: Afghan policeman hunted after five UK soldiers shot dead
04/11/2009: Aghan govt 'wasting lives of western troops'
04/11/2009: Afghan policeman kills five British soldiers
02/11/2009: Karzai wins Afghan election by default
02/11/2009: UN chief makes surprise Afghan visit
29/10/2009: UN staff lie low after Kabul terror attack
29/10/2009: Obama 'considering smaller Afghan troop option'
28/10/2009: Karzai's brother denies CIA allegations
28/10/2009: Police: 12 dead in Kabul UN attack
28/10/2009: Taliban kills UN staff in Kabul guesthouse attack
27/10/2009: Eight more die in US troops' bloodiest month in Afghanistan
27/10/2009: US diplomat resigns over Afghan war
26/10/2009: Ten US troops killed in Afghan helicopter crash
24/10/2009: Taliban call for Afghans to boycott runoff poll
23/10/2009: Two Nato countries veto Afghan reinforcements
22/10/2009: Cheney tells Obama to 'stop dithering' on Afghanistan