Authorities have confirmed that the 1 1/2-year-old baby, who they say was injured by a Norwich man, has died. 

Devan Ellsworth, 28, was arrested Sunday night and charged, after police say he assaulted the toddler in an apartment on Henry Street.

The child had to be hospitalized, and was being treated for a serious head injury. The child has since succumbed to those injuries. 

Ellsworth was arraigned on charges of second-degree assault and endangering the welfare of a child.

It is uncertain if additional charges will be filed. He is being held in the Chenango County Jail without bail.

Police in Norwich are working the the Onondaga County Medical Examiner's Office in their investigation.