KABUL, Sept 10 (Reuters) - The Afghan Taliban said on Monday they were doing everything in their power to try to kidnap or assassinate Britain's Prince Harry, who arrived in Afghanistan last week to fly attack helicopters.

Queen Elizabeth's grandson is in Afghanistan on a four-month tour, based out of Camp Bastion in volatile Helmand province, where he will be on the front line in the NATO-led war against Taliban insurgents.

"We are using all our strength to get rid of him, either by killing or kidnapping," Taliban spokesman Zabihullah Mujahid told Reuters by telephone from an undisclosed location.

"We have informed our commanders in Helmand to do whatever they can to eliminate him," Mujahid added, declining to go into detail on what he dubbed the "Harry operations".

The 27-year-old prince, who is third in line to the throne, took up his new role two weeks after he was photographed frolicking naked in Las Vegas.

Known in the military as Captain Wales, he first served in Afghanistan in 2008 as an on-ground air controller, but his tour was cut short when a news blackout, designed to protect him while on the front line, collapsed.

The Ministry of Defence has said the threat to Prince Harry's life in Afghanistan was less severe in helicopters.

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  • Prince Harry tour of duty in Afghanistan

    Britain's Prince Harry is shown an Apache helicopter by a member of his squadron, obscured behind, (name not provided) at Camp Bastion in Afghanistan, Friday Sept. 7, 2012. Prince Harry, known to the military as Capt. Harry Wales, will be based at Camp Bastion during his tour of duty as a co-pilot gunner on attack helicopters. (AP Photo/Cpl Paul Morrison, Army Photographer, MOD)

  • Prince Harry

    Britain's Prince Harry examines the 30mm cannon of an Apache helicopter Friday Sept 7 2012 at Camp Bastion in Afghanistan, where he will be operating from during his tour of duty as a co-pilot gunner. The Prince has returned to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/ John Stillwell, Pool)

  • Prince Harry

    Britain's Prince Harry is shown the Apache flight-line Friday Sept 7 2012 by a member of his squadron (name not provided) at Camp Bastion in Afghanistan, where he will be operating from during his tour of duty as a co-pilot gunner. The Prince has returned to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/ John Stillwell, Pool)

  • Prince Harry tour of duty in Afghanistan

    In this image from video, Britain's Prince Harry is shown an Apache helicopter by a member of his squadron, obscured behind, (name not provided) at Camp Bastion in Afghanistan, Friday Sept. 7, 2012. Prince Harry will be based at Camp Bastion during his tour of duty as a co-pilot gunner, returning to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/TV Pool)

  • Prince Harry tour of duty in Afghanistan

    In this image from video, Britain's Prince Harry, left, has a close look at an Apache helicopter, during a tour with a member of his squadron, (name not provided) at Camp Bastion in Afghanistan, Friday Sept. 7, 2012. Prince Harry will be based at Camp Bastion during his tour of duty as a co-pilot gunner, returning to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/TV Pool)

  • Prince Harry tour of duty in Afghanistan

    Britain's Prince Harry, left, is shown the Apache helicopter by a member of his squadron (name not provided) at Camp Bastion in Afghanistan, Friday Sept. 7, 2012. Prince Harry will be based at Camp Bastion during his tour of duty as a co-pilot gunner, returning to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/John Stillwell)

  • Prince Harry

    Britain's Prince Harry gives a thumbs up Friday Sept. 7, 2012 after he walked past the Apache flight-line at Camp Bastion in Afghanistan, where he will be operating from during his tour of duty as a co-pilot gunner. The Prince has returned to Afghanistan to fly attack helicopters in the fight against the Taliban. (AP Photo/ John Stillwell, Pool)