CLARKSVILLE, Tenn. - A U.S. Army helicopter from Fort Campbell crashed in rural Tennessee on Wednesday night, killing two pilots, according to a base spokesman.

Fort Campbell spokesman Maj. Allen Hill said in a statement late Wednesday night that the AH-64D Apache helicopter went down during "a routine training mission" 12 miles south of the base.

"Two 101st Airborne Division (Air Assault) pilots were killed when their helicopter crashed near Fort Campbell, Ky., at approximately 7 p.m.," Hill said.

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The pilots were not immediately identified, pending notification of family members.

Montgomery County Emergency Management Agency Director Jerry Buchanan told The Tennessean the helicopter was found in a river bottom and was on fire when first responders arrived.

Buchanan said dozens of emergency workers were at the site.

Fort Campbell is located on the Kentucky-Tennessee border, about 60 miles northwest of Nashville.