Two British private security contractors and two of their Afghan colleagues have been arrested by police in Kabul and told to close their company after 30 AK-47 rifles were found in their car boot. Interior Ministry spokesman Sediq Sediqi said today that police had stopped the mercenaries at a checkpoint on Tuesday and found the guns in a metal box. All had their serial numbers scratched off and the men had no permits for them. Mr Sediqi said they were being held as part of a probe into gun running and the case had been sent to the country's attorney general. President Karzai has ordered all mercenary firms operating in the country to shut down by March, to be replaced by a government-run force.