Police say they thwarted what could have been a devastating mass casualty attack after arresting a transgender Nevada suspect accused of plotting a shooting on the Las Vegas Strip and uncovering an arsenal that included machine guns, grenade launchers and more than 50 firearms.Allison Howlett, 36, who police identify in the arrest report as transgender, was arrested June 27 after Henderson police received a frantic 911 call from the suspect's spouse reporting a domestic dispute, a stolen vehicle loaded with firearms and threats of both "suicide by cop" and a mass shooting.Using vehicle tracking technology, Henderson police traced the stolen SUV to the parking garage at Sunset Station casino, where officers boxed in the vehicle after finding Howlett inside with loud music blaring and refusing repeated commands to surrender.USPS WORKER ARRESTED AFTER ALLEGED MASS SHOOTING THREAT AGAINST TEXAS PRIDE EVENT, FBI SAYSHenderson police located the suspect's vehicle in the parking garage at Sunset Station before making the arrest.(KVVU)Authorities said officers eventually convinced Howlett to lower a window by offering water before pulling the suspect from the vehicle and deploying a Taser during the struggle."It should be noted that the suspect had been sitting on a handgun and had access to a fully automatic, silenced MP5-style machine gun in the back seat of the vehicle, further corroborating the reported threats of suicide by cop and having the means to carry out a mass shooting," Henderson Police Chief Reggie Rader said during a Tuesday news conference.
Know something we should investigate? [email protected] IG: @fndstephprice X: @StephenyPriceYour tip could lead to our next story.Authorities say detectives recovered 22 firearms from the stolen vehicle, including handguns, rifles, a fully automatic firearm, suppressors, high-capacity magazines and hundreds of rounds of ammunition.A subsequent search warrant executed at Howlett's Henderson residence uncovered 30 ad...