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LOBELVILLE, Tenn. — A teenager has been arrested in the murder of a long-time member of the Tennessee Army National Guard Wednesday.

Sgt. 1st Class Michael W. Braden, who was from Ripley, was shot and killed at the armory.

Christopher C. Farrar, 15, of Lobelville is charged with criminal homicide.

Farrar is being held without bond.

Investigators say Farrar gained access to the Armory and fired several shots, one of which hit Braden.

It’s not clear what spurred the shooting.

Maj. Gen Max Haston of the Tennessee National Guard said Braden served in the Guard for more than 20 years and was a sergeant first class.

He ran the day-to-day logistical operations for the unit.

Tennessee Gov. Bill Haslam released the following statement: “Sergeant Braden was a 27-year veteran of the Tennessee Army National Guard, and it’s a tragic day when we lose a decorated hero who has served his country so well. Crissy’s and my thoughts and prayers are with his wife, Jennifer, and their three children during this difficult time.”