A New Hampshire man was charged Monday with second-degree murder in the January death of his 7-year-old son.

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A New Hampshire man has been charged in connection with his seven-year-old son's January death. (Fox News)

Authorities have said Jaevion Riley was unconscious and not breathing when emergency workers were called to his home Jan. 17. He died a week later in a Massachusetts hospital, and police said he had been beaten and burned.

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Murtadah Mohammad has been jailed since January on charges he assaulted the boy, endangered his welfare and falsified evidence. The attorney general's office said Monday those charges will be dropped as prosecutors pursue the murder charge.

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Mohammad is being represented by the public defender's office, which was closed Monday. Court documents do not list a specific attorney assigned to his case.