Noticed somethin

I noticed this one thing in the unidentified females chrono index that I was wondering if anybody else had noticed or if there is any articles or something about it being noted in an investigation—basically anything that indicates somebody noticed

Three Hispanic females, all discovered in 2004—but only their cranium’s were recovered. Three different cities but in the same country—Pima county, Arizona. Two of which were brought to their owners or to somewhere by dogs, from August to September. Anybody know anything about this? Like are they connected and just not mentioned in the circumstances of discovered? Thanks.

(1147UFAZ, 1148UFAZ, 1149UFAZ)