This is a rush transcript from "On the Record ," June 18, 2008. This copy may not be in its final form and may be updated.

GRETA VAN SUSTEREN, FOX NEWS HOST: Did one of these four men murder a grad student in Florida? A short time ago, police released these four sketches of persons of interest in the murder of jogger Nicole Ganguzza. Now, Ganguzza disappeared June 10 while jogging in an Orange County, Florida, park. The next day, June 11, she was found dead, murdered. The park where her body was found has been the target area of a serial rapist.

Joining us live from Orlando is Drew Petrimoulx, reporter for WDBO radio. Drew, who are these people in the sketches? I mean, what do we know about them?

DREW PETRIMOULX, WDBO RADIO: Well, those are people known to frequent that park or were there on that day. They've talked to dozens of people that were at the park that day, and these are some of the people that they weren't able to get a hold of. So they don't know where they are at this time. They said they have gotten hundreds of tips since they've put their faces on TV. So they're hoping to get those people in. Again, they're not suspects per se at this time. They want to know where they were that day, and they want to know if they may have seen anything that could lead them to Ganguzza's killer.

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VAN SUSTEREN: Do you have any information about the person who gave the information for the sketches? Did that person, for instance, see a transaction with the jogger, see the jogger assaulted, see anything at all like that?

PETRIMOULX: Well, I think it was a couple different people that gave the information for the sketches. It wasn't just one person. And I'm told that it was nothing like that, that they were just seen in the park. And authorities want to question everyone who was there, and they haven't been able to get a hold of these people yet. So they just want to talk to them about where they were and what they saw on that day.

VAN SUSTEREN: All right, take me back to June 10, when Nicole disappeared. What time of day was she jogging? And what can you tell me about her?

PETRIMOULX: It was just before dark. Again, she's a 26-year-old grad student at UCF. And she doesn't usually jog in this park, but she, for a switch-up, wanted to go there. And you know, she disappeared. And investigators have said that, you know, nobody really saw her. She told her family that she was going for a job and just never came home.

VAN SUSTEREN: Prior to her disappearance and death, would you have felt uncomfortable jogging in that park?

PETRIMOULX: No, and I've been there plenty of times. I have, you know, girl friends of mine that jog in that park, and I've been in places around there, and you know, it's in a nice place of town. It's on the east side, over by where UCF is, so there's, you know, plenty of college kids around that park. And you know, it seems like a safe place.

I mean, I know in late 2006, early 2007, there was what was known as the "East side rapist," who raped two girls in similar areas around that park. But I mean, that was kind of out of people's minds by now, and you know, it seems like a safe place. There's a dog park there, families there. You know, it seems like a safe place.

VAN SUSTEREN: Has that rapist ever been caught?

PETRIMOULX: No. They haven't caught that person. And as far as if the new suspect from the Ganguzza case could be him, they haven't released any information on that. A 19-year-old man by the name of Clemente Garcia (ph) was arrested last Thursday and -- for another rape in that same area, not one of the two, so -- that were considered the East side rapist, so -- but they haven't said if he's the East side rapist or involved with the Ganguzza case, either.

VAN SUSTEREN: Drew, thank you.

PETRIMOULX: Good evening.

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