Following the maneuvers, Ferdinand and his wife Sophie planned to visit Sarajevo to open the state museum in its new premises. On 24 June the battleship brought the Archduke from Trieste to the Narenta River, where he boarded a yacht which took him north towards Sarajevo. After observing the military maneuvers for three days, the Archduke met his wife in Sarajevo. On 28 June 1914, they were shot to death by Gavrilo Princip. Upon hearing of the assassination, Commander-in-Chief of the Navy Anton Haus sailed south from Pola with an escort fleet comprising "Tegetthoff", the scout cruiser , and several torpedo boats. Two days after their murders, Ferdinand and Sophia's bodies were transferred aboard "Viribus Unitis", which had been anchored waiting to receive the Archduke for his return, and were transported back to Trieste. "Viribus Unitis" was shadowed by Haus' escort fleet for the journey, with the fleet moving slowly along the Dalmatian coast, usually within sight of land. Coastal towns and villages rang church bells when the ships passed while spectators watched the fleet from the shoreline. The Archduke's death triggered the July Crisis, culminating in Austria-Hungary's declaration of war on the Kingdom of Serbia on 28 July 1914. Events unfolded rapidly in the ensuing days. On 30 July 1914 Russia declared full mobilization in response to Austria-Hungary's declaration of war on Serbia. Austria-Hungary declared full mobilization the next day. On 1 August both Germany and France ordered full mobilization and Germany declared war on Russia in support of Austria-Hungary. While relations between Austria-Hungary and Italy had improved greatly in the two years following the 1912 renewal of the Triple Alliance, increased Austro-Hungarian naval spending, political disputes over influence in Albania, and Italian concerns over the potential annexation of land in the Kingdom of Montenegro caused the relationship between the two allies to falter in the months leading up to the war. Italy's 1 August declaration of neutrality in the war dashed Austro-Hungarian hopes to use the ships of the "Tegetthoff" class in major combat operations in the Mediterranean, as the navy had been relying upon coal stored in Italian ports to operate in conjunction with the "Regia Marina". By 4 August Germany had already occupied Luxembourg and invaded Belgium after declaring war on France, and the United Kingdom had declared war on Germany in support of Belgian neutrality.