D.C. Code § 7-2510.12
Nothing in this subchapter shall be construed to affect the ability of a law enforcement officer, as that term is defined in § 7-2509.01(3), to remove firearms or ammunition from any person pursuant to other lawful authority.
Sept. 24, 1976, D.C. Law 1-85, title X, § 1012
Sept. 24, 1976, D.C. Law 1-85, § 1013
May 10, 2019, D.C. Law 22-314, § 2(e)