Elton John checked into a Los Angeles hospital Wednesday, where doctors diagnosed the 65-year-old singer with a serious respiratory infection, his publicist said Thursday. The 65-year-old singer was released from Cedars-Sinai Medical Center in Los Angeles after testing and treatment Wednesday, according to his publicist. John became ill while performing his "Million Dollar Piano" show at The Colosseum at Caesars Palace in Las Vegas last weekend, leading him to undergo testing at Cedars-Sinai on Wednesday."

"Those tests resulted in the attending Cedars-Sinai physician recommending that Elton not perform any concerts for approximately seven days with complete rest and antibiotic treatment to cure his respiratory infection and prevent any damage," a statement from the publicist said.