After assassinating the Archduke Franz Ferdinand and his wife in June 1914; Gavrilo Princip spent just short of 4 years in Prison in Austria-Hungary before dying in April 1918 of tuberculosis. I was wondering since he lived to see the results of his actions did he ever express regret for his actions?
I have tried to find information regarding his time in prison, interrogations, possible letters to/from him, etc, but have not come up with much. I have read that he may have attempted suicide in 1916 while in prison.
Any insight regarding his time time in prison would be of interest to me.