The bones found near her grandparents' house have been identified as the remains of missing Florida toddler Caylee Anthony, officials said Friday.

The Orange County sheriff's office made the announcement at an afternoon news conference, the Orlando Sentinel reported.

Scientists at the FBI lab in Virginia matched the DNA to Caylee's, Orange County Medical Examiner Jan Garavaglia said. She added that the the bones showed no sign of trauma before death.

"The manner of death in this case is homicide," she said. "The cause of death will be listed as homicide by undetermined means."

Casey Anthony, Caylee's mother, is being held in the county jail on a murder charge. Officials said that she was notified of the lab findings just before the news conference.

Also Friday, Capt. Angelo Nieves said that the county sheriff's department is investigating reports that a meter reader whose tip led to the discovery of the remains had suggested a search of the area as early as August.

Nieves said that other sources had also pointed to the area, but a "cursory search" turned up nothing, CNN reported. He said that the area was flooded during the summer, hindering investigators.

Caylee, 2, vanished in June. Her mother reported her missing a month later, claiming she had been kidnapped by a babysitter.