Authorities are investigating whether a private gun sale between Shane Tamura and his supervisor Rick Ackley at The Horseshoe Las Vegas was conducted legally.
Tamura used the rifle to carry out Monday night’s deadly shooting in New York City.
Multiple agencies, including the FBI and the Nevada Gaming Control Board, are being questioned about whether they’re investigating the supervisor who sold Tamura the gun.
A law enforcement official confirmed that Ackley, the supervisor, who worked with Tamura in the surveillance department at Horseshoe Las Vegas, legally purchased an AR-15 style rifle last summer, then sold it to Tamura for $1,400…