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JAMAICA, Queens — A mother has been arrested in the death of her 5-year-old son in Queens, more than a year after the boy was killed, police said on Thursday.

Michael Guzman

Police arrested Phyllis Reinoso, 31, on Thursday and charged her with manslaughter, assault, reckless endangerment, acting in a manner injurious to a child less than 17 and failure to exercise control of a minor, police said.Since

The 5-year-old boy, identified as Michael Guzman, was found unconscious and unresponsive inside a home on 109th Street between Liverpool and Inwood streets in South Jamaica, Queens, on Jan. 22, 2017.

The child’s death was ruled a homicide in July 2017, about six months after he died, NYPD Chief of Detectives Dermot Shea said.

Since then, investigators have been looking for the boy’s mother. They found her two weeks ago in Alabama, Shea said.

The city’s medical examiner has determined the child’s cause of death was  acute phenobarbital intoxication. The drug is a long-acting barbiturate often used to treat seizures, according to the National Center for Biotechnology Information.

Shea said the child had epilepsy and was legally prescribed the medication. He said the case involves an “overindulgence” of medication when the child was left in the care of someone other than his parents.

He would not reveal a possible motive. He said they don’t expect to charge anyone other than the boy’s mother.

At the time of the boy’s death, sources told PIX11 News that there had been a history of domestic violence at the home and the city’s Administration for Children’s Services had a history at the address.