By Amy Wadas

SMITH TOWNSHIP, Pa. (KDKA) – Police in Washington County are investigating the death of a 6-month-old boy ruled a homicide by the medical examiner.

The Allegheny County Medical Examiner said the boy was taken to the hospital after he was found unresponsive at a home. He died at UPMC Children’s Hospital on Monday, the medical examiner said, ruling the cause of death blunt force trauma to the head.

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The report said the infant was found unresponsive at a home in the 100 Block of Colony Road in Smith Township on Dec. 30 and the child lives in Burgettstown.

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The Smith Township police chief said the infant’s grandparents were babysitting him at their home when 911 was called. He said the child was first taken to Weirton Hospital before he was transferred to Children’s. KDKA asked the chief if he could release any more details in this case. He said he couldn’t, stating the investigation is still in the early stages.

It’s unclear who is responsible for the boy’s death and no one is facing charges yet, the chief said. His department is being assisted by Washington County detectives and state police.

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KDKA also reached out to the Washington County district attorney. He said the case is under investigation.