It usually is enabled by a bilateral or multilateral treaty. Some states will extradite and not using a treaty, but All those cases are scarce.
assistenza legale ai detenuti e imputati - avvocato a Roma reati https://lancehujw889659.blognody.com/28541805/the-basic-principles-of-estradizione-e-assistenza-legale-ai-detenuti-avvocato-roma