FRANKFORT, Ky. (WMDJ) – As Kentucky rolls out its medical marijuana program, the federal Bureau of Alcohol, Tobacco, Firearms and Explosives is warning residents about a conflict with federal law.

The ATF states that anyone using marijuana, even for medical purposes, is considered an unlawful user of a controlled substance under federal law and cannot legally own or purchase firearms or ammunition.

Officials say one option is for folks affected by the law to transfer the ownership of their guns for a period to someone else who can possess them.