Authorities say the 12-year-old son of a northwestern Indiana couple weighed only 23 pounds when child welfare workers removed him from their home in 2014.

The Jasper County Sheriff's Office says the 50-year-old man and his 41-year-old wife were arrested Tuesday on three counts each of neglect of a dependent. They're being held at the Jasper County Jail.

The sheriff's office says an arrest warrant wasn't issued until Monday because prosecutors were obtaining additional information.

Sheriff Terry Risner said in a news release that the child was diagnosed from birth with an incurable brain disorder that required constant care.

The (Lafayette) Journal & Courier reports (http://on.jconline.com/29cwcLW ) doctors at Riley Hospital for Children in Indianapolis diagnosed the child with "failure to thrive" and other ailments associated with improper care.

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Information from: Journal and Courier, http://www.jconline.com