GM Resorts International announced Sunday it is temporarily suspending operations at all Las Vegas properties "until further notice" effective Tuesday.

Casino operations are set to close Monday, followed by hotel operations. The company will not be taking reservations prior to May  1.

This means closure of Bellagio, MGM Grand, Mandalay Bay, The Mirage, Luxor, New York-New York, Excalibur, and Park MGM, among others. Wynn Resorts also announced closure of its two luxury-hotel casinos for at least two weeks. This includes all nightclubs, day clubs, spas, salons and gyms on these properties, after by end of last week some properties began taking temperature checks of patrons entering.

Currently there at least two confirmed cases of MGM employees with COVID-19: one at Luxor and another at Wet Republic pool, with 26 confirmed cases in Nevada as of late Sunday. This after a guest reportedly attending a convention at MGM's Mirage tested positive last week, which may have further infected several employees.

"It is now apparent that this is a public health crisis that requires major collective action if we are to slow its progression," MGM Chairman and CEO Jim Murren said.