Des Moines Police have made an arrest in connection with the death of an infant Tuesday night.   

Police Sgt. Jason Halifax says 17 year old Drew James Wheeler Smith has been charged with neglect of a dependant person.  His four month old son was found unresponsive Tuesday night when the boy's 16 year old mother came home around 8:00 PM.

Sgt. Halifax says the charges against Wheeler-Smith could be upgraded once the state medical examiner determines the cause of death.

Investigators say the child was found at his home alone in the 6500 Block of Chaffee Road.  It's unclear how long the baby was left alone.