I'm going to jump in here only because I had this saved. Sheriff Leazenby did say this, that there was "no ongoing danger...isolated to the victims" in this video. I'm sorry I don't have a time stamp.
I find his response so interesting. If there was evidence that the girls were lured into coming to the bridge that day (and not simply targeted after an opportunistic offender identified them as the likeliest targets at that specific location), he could have easily said, "Due to the investigation I can't give details but, we have reason to think this crime was isolated to these particular girls and for that reason there is no danger to the public."
But he doesn't say his statement was based on evidence. Here he says it was based on a "feeling" and "faith" that a crime like this wouldn't happen to Delphi again.
He also says that just as important was his desire to convey to the people of Delphi that he wanted to keep the peace and reduce paranoia. He says he doesn't think "constantly looking over your shoulder is any way to live."
What I read into this is that his statement is more about what he hopes will happen than what he knows for sure and it's based mostly on his desire to prevent people from panicking.
Contrast this to these statements, these span the time period from immediately after the bodies were found up until the three year mark:
"Be cautious and careful and be parents...know where your children are and what they are doing."
ISP: Delphi Amber Alert wouldn't have helped
Detective Kevin Hammond: "Things have changed for us all...I am more vigilant with my own children since this happened."
The best of humanity in the worst of times | Carroll County Comet/
Interviewer: "This community has never had a double homicide, Sergeant, from what I understand, and it has been years that Delphi, a community of 3000, has ever had a murder. What do you say to this community tonight because a...killer is on the loose, a double murderer?"
Sgt. Riley: "Well, we tell people, like we've been telling people since this has all started, you need to be safe out there. We are working 24/7 to try to solve this horrendous crime."
CNN.com - Transcripts
Three Years Later: Everything we know about the murders of Libby German & Abby Williams in Delphi
“I can’t say there’s not a threat to the community,” Indiana State Police Sgt. Kim Riley told RTV6 at the time. "We have not caught the person yet. Is the person still in the community? We don’t know.”