Las Vegas Metropolitan Police Department officers responded to a shooting in a hotel room on the 8th floor, Las Vegas affiliate KLAS reported.
Police said the victims and the suspect were known to each other.
LAS VEGAS, NEVADA - DECEMBER 14: An exterior view shows The Mirage Hotel & Casino on December 14, 2021 in Las Vegas, Nevada. MGM Resorts International has agreed to sell the Las Vegas Strip resort to Hard Rock International for USD 1.075 billion
Videos taken at the scene showed a security officer preventing customers from entering or leaving the hotel. The officer claimed the hotel was on lockdown following a "critical incident."
Las Vegas police said that the arrest was made within six hours of the shooting.
A heavy police presence was seen outside the hotel and police encouraged people to avoid the area.
Police said the shooting at the iconic Las Vegas hotel was "an isolated event."