Three codes could be found in the CENTRAL OMNILYTICS: MURDER AT NIANTIC REPORT PART TWO post on the Investigate Ingress blog.
[1] ac977b76a87d967c86879a87989678ac76ae7d
[2] 454225155551153343454311333311154215151451153332
[3] s8u9kra2qsz4
Code #1
Observations
Looks like hex but range is off
Code #2
Observations
We’ve seen that range of numbers before, think square
Code #3
Observations
Try to find the keyword first