Baku, January 20, AZERTAC On 20 January – National Mourning Day, Prime Minister Ali Asadov, Speaker of Milli Majlis Sahiba Gafarova, Head of the Presidential Administration Samir Nuriyev, other state and government officials visited the Alley of Martyrs.They commemorated Azerbaijani heroes who gave their lives for the country`s freedom and put flowers at their graves.