The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives said Friday the weapons were taken from a CSX rail yard in the city about two weeks ago.
ATF spokesman Richard Coes said the weapons include assault rifles he described as "AK-style." He declined to discuss other aspects of the case.
Gary Sease, a spokesman for rail line CSX Corp., said the Jacksonville, Fla.-based company is cooperating with law enforcement to recover the weapons and investigate the theft.
Authorities said the rifles were stolen on or around Nov. 12.
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