It sounds like they merely looked for who had accessed a Tor network, not that they could tell anything about the communication. Kind of like, "We know the perp

It sounds like they merely looked for who had accessed a Tor network, not that they could tell anything about the communication. Kind of like, "We know the perpetrator entered the grounds through the east gate prior to 9:00am. Security footage shows only 1 person doing that so go talk to him".