The death on July 8 of Brooklyn Foss-Greenaway is being treated as a homicide, by authorities in Maine. A 10-year-old girl is charged with homicide in the case.

A 10-year-old girl has been charged with manslaughter in the death of an infant from Clinton, Maine, WLBZ television reported Friday, citing state police.

Three-month-old Brooklyn Foss-Greenaway died July 8 after being left in the care of a babysitter in Fairfield, about 6 miles from Clinton, according to police.

Police automatically investigate the death of a child under three, reports said.

The state medical examiner's office ruled the death a homicide on Wednesday, WLBZ reported.

"In this case there was some warning signs that we thought very early on," Department of Public Safety Spokesman Steve McCausland told WABI television. "The medical examiners have confirmed that and obviously the case now has been declared a homicide."

"The cause of death is being withheld as the medical examiner continues to work on that aspect," he said, according to WABI.

The 10-year-old, whose name was not released, is in custody of the Maine Department of Health and Human Services, the WLBZ report said.

The baby's mother, Nicole Greenaway, said the 10-year-old is the daughter of the babysitter, the Bangor Daily News reported. Greenaway said she works with the woman at a medical facility in Waterville, ME.

The girl is the youngest person in Maine to be charged with manslaughter in at least 25 years, WLBZ reported, citing McCausland. It was not clear whether she was charged as a juvenile or an adult.

She is scheduled to appear in court Oct. 22 with her attorney.

According to earlier reports, emergency responders arrived at the scene six minutes after receiving a 911 call on the night of July 7 saying the baby was not breathing and unresponsive. The baby died later at the hospital, WABI reported.

Data from the Bureau of Justice Statistics show that 88 children between the ages of 10 and 12 were arrested on murder and non-negligent manslaughter charges between 2003 and 2009. Of them, 14 were girls.

During that same time, seven children under the age of 10 were arrested for similar crimes; one was a girl.

In 2005, a 7-year-old boy from Kentucky was charged with killing his mother’s boyfriend, according to an Associated Press report at the time. He was too young to be tried as an adult and was, at the time, sequestered away from older adults at a juvenile detention facility.

In 2008, an 8-year-old boy from rural Arizona confessed to fatally shooting his father and his father’s friend.

"I went upstairs and then I saw my dad and then I got the gun and then I fired it at my dad," the boy told prosecutors, according to an ABC News report. "He was on the ground and then I reloaded it."

These juveniles cannot, according to a recent Supreme Court ruling, be sentenced to life in prison without possibility of parole.

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