North Carolina ? Military and civilian authorities have charged an HIV-positive soldier with assault with a deadly weapon, accusing him of having unprotected sex with a partner he didn’t tell about the infection.

Military and civilian prosecutors haven’t decided who will prosecute the case against Pfc. Johnny Lamar Dalton, said Maj. Tom Earnhardt, a spokesman for the 82nd Airborne Division at Fort Bragg.

Dalton, 25, was arrested last week and was being held Tuesday in the Cumberland County jail on a $50,000 bond, said sheriff’s department spokeswoman Debbie Tanna. She said inmates weren’t allowed to give interviews, and a jailer said the soldier hadn’t been appointed an attorney.

Along with the assault count, Dalton faces civilian charges of committing a crime against nature and misdemeanor assault inflicting serious injury. Earnhardt said he faces the same charges in the military’s criminal justice system.

An arrest warrant filed by county officials accuses Dalton of not telling his male partner, an 18-year-old civilian, that he has HIV, the virus that causes AIDS. The teen’s mother alerted authorities to the relationship after her son fell ill and told her about it; he has tested positive for HIV. Tanna said she did not know whether Dalton was the source of the teen’s infection.