Court documents allege 23-year-old Carlos Lamar Murray allowed the boy to become submerged in a bathtub to the point he inhaled water - and did nothing to help the baby even after he became unconscious.
Arrest warrants also say the child showed signs of physical abuse - including a bruise on the nose and eyes swollen shut - injuries that investigators say are consistent with shaken baby syndrome.
Murray is charged with two counts of felony child abuse and one count of attempted murder.
The alleged abuse occurred December 26 at the boy's mother's apartment in Fuquay-Varina. Murray has a Guerin Rd., Holly Springs address.
Murray was being held in the Wake County Jail with bond set at $1 million.