"It is important to deploy Tamil police in the north so that the military no longer needs to perform these functions," Blake told reporters in Colombo.
"Having Tamil police is good to improve community policing. It raises the level of trust," added Blake, who earlier served as an ambassador to Sri Lanka.
Blake also called on the government to disarm Tamil-speaking paramilitary groups which supported the Sinhalese majority during the conflict and since its end have allegedly been terrorising the local Tamil population.During meetings with President Mahinda Rajapakse and other senior government officials, Blake said it was important to address Tamil grievances which led to the 37-year conflict with the Tamil Tiger rebels.
Sri Lanka's military forces defeated the Tamil Tiger separatist rebels in May 2009 after decades of warfare but relations between the country's Sinhalese majority and Tamil-speaking minority remain deeply strained.
Though a lot of post-conflict rebuilding work is in progress, Blake said a great deal needs to be done "to heal the wounds of war and ensure a democratic and prosperous Sri Lanka".