The Supreme People's Procuratorate (SPP) said that 564 individuals have been prosecuted in nine cases and another 53 were convicted in four cases.
In the first batch of 21 cases handled by the SPP and the Ministry of Public Security, 481 persons were arrested.
The cases involved a huge amount of assets, along with serious social effects, and included student victims, cross-border fraud, the SPP said.
She died of cardiac arrest on August 19.
An unidentified official from the SPP said the progress in the 21 cases have contained the increase in telecom fraud, state-run Xinhua news agency reported.