The training of new recruits into the Afghan Local Police or ALP has been suspended in the wake of an increase in the number of insider attacks.
US Forces have said the temporary halt will be while they re-vet members of the current 16,000-strong force while they check for possible Taliban links.
An existing eight-step vetting programme will be made more rigorous, the number of counter-intelligence teams will be increased and the sale
of Afghan army and police uniforms will be made illegal.
Rogue shootings have killed 45 NATO-led troops so far this year, 15 last month alone.
The so called “Green on Blue” attacks are damaging trust between Afghans and their allies and are undermining security transition plans in the run up to the withdrawal of all foreign combat troops by the end of 2014.