A North Korean court has sentenced an American national to six-years hard labour for “hostile acts” against Pyongyang.<br /><br />Matthew Miller, was arrested in April after arriving as a tourist.<br /><br />Authorities claim he ripped up his visa and sought asylum in the country.<br /><br />During the trial the court saw notes written that claim the 24-year-old became a fugitive because of his involvement with Wikileaks.<br /><br />It is unclear how these notes came to be written or why.<br /><br />The US government says securing the release of Miller is a top priority.<br /><br />He joins two other US nationals in custody in North Korea, Kenneth Bae is serving a 15-year sentence for trying to overthrow the government and Jeffery Fowle, arrested in May, for allegedly leaving a bible in a public place.<br /><br />North Korea forbids the spreading of Christian teachings.