A southwest Kansas man has been arrested following what authorities are calling the abuse death of his 9-month-old son at a Wichita hospital.

Family members took Brandon Villa to a Dodge City hospital on Sunday. He was flown Wesley Medical Center the same day. The Dodge City Police Department was informed of his death early Thursday.

The case is now being investigated as a homicide, although Dodge City Police Chief Craig Mellecker declined to comment on the baby’s injuries.

Mellecker says the 24-year-old father was arrested Wednesday in Texas County, Okla., on a warrant for abuse of a child. The News reports the father was out of jail on bond in a robbery case when the baby was injured Sunday.