A Fox News affiliate and police firearms expert got into a heated debate with Julia Hartley-Brewer after claiming the safest cities in America are those that have an open approach to gun control.
Joe Key was speaking to talkRADIO after Sunday's shooting in Las Vegas, which left at least 59 people dead and over 500 injured. Gunman Stephen Paddock is understood to have smuggled a huge arsenal of weapons, including an assault rifle, into the hotel room where he committed the massacre.
Key, who is now commanding officer of the firearms training unit at Baltimore Police Department, told Julia Hartley-Brewer "actually in America the safest cities are those cities that have open control" over guns.
However Julia argued that this was untrue, saying "the states in America with tighter gun control laws have fewer gun-related deaths."
Key hit back by saying "that is not the case. Chicago has the highest murder rate and Baltimore has the highest murder rate," but then said he hadn't heard of the statistic mentioned by Julia.
He also said the gun used in Las Vegas "sounded to me - and I’ve heard automatic weapons many many times - it sounded to me like it was a fully automatic weapon.
"The guns that he used, I don’t know and it hasn’t been released yet, but what the sheriff did say was that he had converted them from a semi-automatic to a fully automatic, which is not legal."
Listen to the full interview above