"Baby Doe," the toddler whose body was found on a Boston Harbor beach, was identified Friday as Bella Bond

DEVELOPING:  "Baby Doe," the toddler whose body was found on a Boston Harbor beach, was identified Friday as Bella Bond and her mother and mother's boyfriend have been arrested in her death, a Massachusetts prosecutor said Friday.

Suffolk County District Attorney Dan Conley began a late afternoon press conference by intoning, "her name is Bella," then announced her mother's boyfriend, Michael Patrick McCarthy, had been charged with murder and her mother, Rachelle Bond, had been charged with being an accessory after the fact. They will be arraigned Monday in Dorchester Municipal Court.

"We hoped her death was not a crime but the evidence suggests otherwise," he said. "The child whose very name means beauty was murdered."

Conley put Bella's age at 2 1/2 - she previously had been thought to be about 3 or 4 when her body was found 83 days ago.

Earlier, Massachusetts House Speaker Robert DeLeo said McCarthy was being treated at a Boston hospital for drug issues.

The girl's body was discovered June 25 in a trash bag on Deer Island in Massachusetts by a woman walking her dog. Authorities said they believe the child -- found wrapped in a blanket -- was placed there. Authorities at the time said that a cause of death could not be determined. An analysis of pollen on the girl's clothing indicated that she was likely from the Boston area.