In an e-mail, a spokeswoman for D.C. Police Chief Cathy L. Lanier said her department has “completed the investigation into this matter, and the case has been presented to the OAG for a determination of the prosecutorial merit of the case.”

Possessing a magazine capable of holding 10 or more rounds of ammunition, even if empty, is a misdemeanor punishable by up to one year in jail and a $1,000 fine.

The question of how to proceed now rests with the office of Attorney General Irvin B. Nathan, which oversees prosecutions of some low-level offenses. A spokesman for Nathan said the office would not comment until a decision was made.