UPDATED: Gregory displayed what appeared to be a 30-bullet gun magazine as he questioned Wayne LaPierre about the Sandy Hook elementary school shooting.
NBC's David Gregory is under investigation by the Washington Metropolitan Police Department following Sunday's Meet the Press.
Officials are evaluating whether any city laws were violated when Gregory, while interviewing the National Rifle Association head Wayne LaPierre, displayed what appeared to be a 30-round gun magazine. During the questioning, Gregory challenged LaPierre on whether fewer children would have been killed in the Sandy Hook Elementary School shooting this month if the gunman had access to fewer bullets.
"Now isn't it possible that, if we got rid of these, if we replaced them and said, 'Well, you could only have a magazine that carries five bullets or 10 bullets,' isn't it just possible that we can reduce the carnage in a situation like Newtown?" Gregory said while holding up the item in question.
LaPierre's response: "I don't believe that's going to make one difference. There are so many different ways to evade that, even if you had that. You had that for 10 years when Dianne Feinstein passed that ban in '94. It was on the books. Columbine occurred right in the middle of it. It didn't make any difference. I know everybody -- that this town wants to argue about gun control. I don't think it's what will work."
Araz Alali, a police officer and spokesman for the WMPD, confirmed to Politico that law enforcement is investigating "the Meet the Press, David Gregory incident."
"There are D.C. code violations, D.C. code restrictions on guns, ammunition. We are investigating this matter," he said. "Beyond the scope of that, I can't comment any further."
In a report posted Wednesday, TMZ said a Meet the Press staffer received permission from a Washington, D.C. police official, as well as the Federal Bureau of Alcohol, Tobacco, Firearms and Explosives.
The code in question, cited by many gun activists following Sunday's broadcast, stipulates that "no person in the District shall possess, sell, or transfer any large capacity ammunition feeding device regardless of whether the device is attached to a firearm. For the purposes of this subsection, the term 'large capacity ammunition feeding device' means a magazine, among other devices."
In another report by The Washington Post, D.C. police said that NBC News had asked them for a high-capacity ammunition clip to use as a prop on the show. The request was denied, according to District authorities.
It is unclear how NBC News obtained the clip. NBC declined to comment on the incident.