A Spencer man will be charged with killing a man inside the psychiatric ward at UMass-Memorial Medical Center, authorities said.

Aldo Dunphe, 23, will be arraigned Friday in Worcester District Court on a murder charge in connection with the attack Tuesday that killed Ratna Bhattarai, 31, of Worcester, according to Worcester District Attorney Joseph D. Early Jr.

Bhattarai died of his injuries this morning, officials said.

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Dunphe is being held without bail at the Worcester County jail.