Police have launched an investigation into allegations British soldiers mistreated people in Afghanistan during the war.

More than 100 civilians allege they were criminally abused and ill-treated during an eight-year period in the conflict.

But Minister for the Armed Forces Penny Mordaunt branded some of the legal claims "ludicrous" and warned they are costing the British taxpayer tens of millions of pounds.

The Royal Military Police (RMP) have launched Operation Northmoor to examine historical allegations of criminal abuse made by more than 100 civilians who claim to have been detained by British Forces during Operation Herrick in Afghanistan between 2005 - 2013.

The Ministry of Defence (MOD) has spent tens of millions of pounds on investigations and compensation following allegations of wrongdoing in Iraq and Afghanistan.

Hitting out at this compensation culture, Ms Mordaunt, said: "I am extremely concerned about recent legal developments that call into question the Armed Forces' ability to operate effectively.

"These have also facilitated a large number of compensation claims and judicial reviews which are time-consuming and can cost the taxpayer tens of millions of pounds.

"The MoD is looking closely at this issue and as the Government's manifesto made clear, we will ensure our Armed Forces overseas are not subject to persistent and sometimes ludicrous legal claims that undermine their ability to do their job.

"Ministers have commissioned detailed work on this and will make any further announcements in due course."

The National Crime Agency and Greater Manchester Police are understood to be acting as strategic advisers in the police probe.

The Al-Sweady inquiry, which dismissed claims British troops murdered and mutilated prisoners following a battle in Iraq in 2004 as "deliberate lies", cost the taxpayer £31 million.