On 1 February 1947 , during the legal purge in Norway after World War II he was convicted of treason .
On 1 February 1947 , during the legal purge in Norway after World War II he was sentenced to six months in prison and loss of his job .
On 1 February 1947 , during the legal purge in Norway after World War II he was convicted of treason and sentenced to six months in prison and loss of his job .