Goldsboro, N.C. — A Seymour Johnson Air Force Base airman accused of killing his young son remained incarcerated Thursday while investigators stayed tight-lipped about the case.

Base officials said they can’t comment on the arrest of Senior Airman Matthew Theurer because the Air Force Office of Special Investigations is now in charge of the case.

Theurer, 21, was charged Wednesday with murder, voluntary manslaughter and negligent homicide in connection with the death of his 15-month-old son, Matthew.

Columbus County sheriff’s deputies found the boy’s body Tuesday, wrapped in a plastic bag and placed in a wooded area along N.C. Highway 905 between Whiteville and Tabor City.

Thuerer remained in the Sampson County jail because Seymour Johnson does not have a detention facility, according to a spokeswoman with the Air Force Office of Special Investigation.

An autopsy was performed on the child Wednesday, but the results will not be available for several weeks, the spokeswoman said. When the investigation is completed, base officials will decide whether Theurer will be prosecuted in a military court, she said.

Investigators offered no information on what led to the discovery of the child’s body or Thuerer’s arrest. But clues to his life can be found on his public Facebook page, where he lists himself as “separated” from his wife, Amy Theurer.

Relatives of the couple could not be reached for comment.

Amy Theurer’s mother, Jama Bumbalough, posted the following statement on her Facebook page on Wednesday: “Everyone please pray for our family. We really need them right now. Not going to talk about it, so don’t ask. God knows. Just pray please. Thanks all.”