While 19 ethnic minority Uyghurs remain on the run after the breakout, the six who were caught during the escape could now be sent back to China.
A U.S.-based group says the police are able to comb stored data on who people know, where they go, and what they buy.
Officials sources say he did little other than enrich himself while in office.
Secretary of State Rex Tillerson says the US may pursue accountability through American law, including possible targeted sanctions.