The pic of the robbery suspect with a knife gave me cold chills! Perhaps...
Are you thinking it's the same guy? I think their eyebrows reveal them to be different people. If you look closely, the killer SH has no hair between his eyebrows and a large gap between eyebrows, whereas the robber with the knife has very thick eyebrows that reach the bridge of his nose and he has hair on the bridge too (almost a unibrow effect).