07/28/2015 01:01 EDT | Updated 07/28/2016 05:59 EDT

Anonymous CSIS document leak probed by RCMP, CSE

Cyber crime investigators with the Communications Security Establishment (CSE) are looking into how the group Anonymous obtained the classified document and then leaked it to the media.

The probe comes after the National Post on Tuesday published a Treasury Board document supplied by Anonymous that reveals CSIS operates 25 foreign stations around the globe.

Anonymous is threatening to release more sensitive government documents unless police in British Columbia do more to investigate the RCMP shooting of Anonymous activist James McIntyre earlier this month.