ORLANDO -- Orange County deputies are again asking for tips as they try to find missing 2-year-old Caylee Anthony.
It's been weeks since the little girl was first reported missing.
On Monday, investigators said they are waiting for the results of FBI lab testing on some evidence they've collected in the case, but said they may not release those results based on what they reveal.
Meanwhile, Caylee’s grandparents, George and Cindy Anthony, met with investigators again for hours Monday.
Deputies said they're trying to gather any information about Casey Anthony, Caylee’s mother, which could be helpful in the case.
Casey remains locked up, and investigators said she's the key to the whole thing.
"We will continue to do everything we can,” said Capt. Angelo Nieves from the Orange County Sheriff’s Office. “It is frustrating. Again, Casey is the key to this investigation. She knows what she did. She knows the last time she saw the child, who she left the child with. Our concern is to find Caylee. She's going to be three years old on Saturday. That is our concerns.”
There have also been reports someone involved with this case may be asking for immunity. But so far, investigators and the State Attorney's Office will not confirm that.
If you know anything about where Caylee may be, call CrimeLine at (800) 423-TIPS.
Anthony Neighbors Deal With Media Circus
As the search for Caylee Anthony gets more local and national coverage, with daily media camps in front of the home of the missing 2-year-old's grandparents, neighbors are starting to feel like prisoners in their own homes.
Tina Giger, a neighbor of George and Cindy Anthony, said the "circus" came to town July 17, shortly after Caylee was reported missing after disappearing a month earlier, and so far, the circus has not left.
"It's like a party out here. I come out and complain to them. They bring 18-wheelers, flashing lights in my window, 'Beep, beep, beep!'" Giger told News 13.
The corner of Hopespring and Grandee drives in east Orlando has all the makings: The tents, noise and plenty of folks gawking while driving by.
Giger just lost her husband to amyotrophic lateral sclerosis, better known as Lou Gehrig's disease, and is trying to recover while dealing with an unexpected media blitz.
"This is not our neighborhood. Our neighborhood is a very quiet neighborhood," Giger said. "Very disruptive. I hope they find this girl. I hope this is to help bring Caylee home, but enough is enough of the media."
"It's extremely annoying. It really is," said Julius Silva, a neighbor who has known the Anthonys for 20 years. "This is bizarre, but they're treating it like a crime scene, but evidence has come up."
Silva said everyone on the block is fed up.
"Like (Monday), with at least three helicopters, you're wondering, 'What's going on?' So I have to come over here and ask around," Silva said.
Even Giger's 7-year-old dog, Kiki, is suffering.
"She's very freaked out. She can't understand what's going on. I mean, she's up all night," Giger said.
One neighbor News 13 spoke with said he is so fed up with the helicopters overhead, he makes sure to give them a big hello as he wades in his pool -- naked.
The Orange County Sheriff's Office reported that the DNA results from the evidence taken from the Anthony's property and Casey Anthony's car are due later in the week.
Previous Developments in the Search for Caylee