A former soldier was arrested Thursday in Florida in connection with the death of a pregnant service member at an Army base in Germany 21 years ago, federal prosecutors said. 

Shannon L. Wilkerson, 42, is charged with first-degree murder in the Nov. 3, 2001 death of Pfc. Amanda Gonzales at Fliegerhorst Kaserne, then an Army base in Hanau, Germany, the Justice Department said. Wilkerson was a soldier at the time before he was later discharged from active duty in 2004. 

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Gonzales, 19, was four months pregnant at the time she was killed, the FBI said. She was found on the floor of her third-floor barracks room and had been strangled. She was discovered after not reporting for work. 

Her cause of death was asphyxiation. 

At the time of her death, Gonzales served as a cook in the Headquarters Supply Company of the 127th Aviation Support battalion.

A motive for the killing has not been disclosed. Wilkerson faces life in prison if convicted. 

Fox News Digital has reached out to the Army.