Russia, Sunday, 5th July

8 July Czernin, the Austrian chargé d'affaires in St Petersburg, mentions to Sazonov the possibility that the Austro-Hungarian government might demand the support of the Serbian government in an investigation within Serbia of the assassinations.
Sazonov says this would make a very bad impression in Russia. The Austrians should drop this idea "lest they set their foot upon a dangerous path".

Early July Sazonov is also mindful of a previous Austro-Hungarian investigation in 1909 that notoriously used forged documents to incriminate Bosnian Serbs accused of agitation against the Empire.