This text below appears in the Halo Graphic Novel. It seems to be some sort of intelligence file or criminal record on, Ander, Jerald Mulkey.
Ander, Jerald Mulkey Section Head: Secessionist Union 9805-684-JMA4784 HT: 188cm WT: 77kg BT: A neg DOB: 2461:02:16 Eye: Brn (#32a) Hair: Brn (#14d) Comp: Cau (#2s) Former CP NewtonPD cv. SWAT, O/DVT, EPM> ties to Harvest for Harvesters, and People's Occupation Government pedagogue 45D12-0508-FD-00272 Sedition/Weapon Violations Class A/ Destruction of G.P./Theft of G.P.
This combined with the pictures of an apparant successful assassination appears to imply that Sergeant Avery Johnson killed Jerald Mulkey Ander as part of Operation: KALEIDOSCOPE.