They seem to be back-pedaling all the time on the "targeted" thing. I have to wonder if the university, from the get-go, asked city police to try to keep fears down. University leaders get so worked up about their public image, especially regarding campus safety. I can see the police being willing to go out on a bit of limb and using the term "targeted" in an attempt to quell fears. It probably didn't seem like too much of a leap, at the time -- because surely someone wouldn't just kill 4 students at random, right?
The city likely has a very tight relationship with the university. At the one presser, there were 5 people at the front of the room: 2 Moscow cops, the district attorney, and two university leaders. It was held at a university building.
It wouldn't be much of a surprise to find out that the university and the city police collaborated on the initial news releases and student alerts.
My hunch is that, eventually, it will be discovered that the term "targeted" was used to appease the university.