A little girl who was found dead on a Boston beach has been identified, nearly three months after her body was discovered, according to NBC affiliate WHDH. One person has been taken into custody in the case, the station reported.

Police executed a search warrant on a home in Boston’s Mattapan neighborhood Thursday night, WHDH said. That led them to determine the girl’s identity, the station added.

Neither the district attorney’s office nor the state police could confirm the report to NBC News. The Suffolk County District Attorney’s Office told NBC News that the “investigation remains very active but, beyond that, we have no updates to share.”

The brown-eyed, brown-haired girl, who investigators called “Baby Doe” as they searched for clues about her identity, was found on Deer Island in the Boston Harbor on June 25. She was dressed in white pants with black polka dots and wrapped in a trash bag that contained a soft zebra-print blanket.

RELATED: Pollen Analysis Reveals Girl Found Dead on Deer Island Was Likely a Local

Last month, based on an analysis of pollen that was found clinging to her pants, investigators determined that she was likely a local.

“The amount and the types of pollen that were on those items suggest that she was from the Boston area,” Jake Wark, spokesman for Suffolk County District Attorney Dan Conley, told NBC News. “That’s somewhat reassuring, because that’s been a theory from the start.”

RELATED: ‘Baby Doe’ Discovery on Deer Island in Boston Harbor Mystifies Authorities

Because Baby Doe’s body was only in the early stages of decomposition, detectives thought she had been killed not long before she was found. The pollen analysis buoyed suspicions that Baby Doe was placed on Deer Island, rather than the idea that she washed up there after drifting from a faraway coastline.

Investigators believed the child was about four years old. She had pierced ears and appeared to be well-nourished. An autopsy failed to identify a cause of death.

This is a developing news story. Please refresh for updates.