Elton John Hospitalized With 'Serious' Respiratory Infection, Cancels Concerts

Concert For The Rainforest Fund Elton John Channing Tatum - H 2012
Jamie McCarthy/Getty Images

Concert For The Rainforest Fund Elton John Channing Tatum - H 2012

The singer entered L.A.'s Cedars-Sinai hospital for treatment on Wednesday morning.

Elton John has been hospitalized for a serious respiratory infection that forced him to cancel his concerts in Las Vegas, says the singer's rep.

John became ill Sunday while performing at the Colosseum at Caesars Palace in Vegas, and he checked into L.A.'s Cedars-Sinai Medical Center at 6 a.m. Wednesday for a full day of "extensive tests," said a statement from John's publicist, Fran Curtis.

A doctor concluded that John, 65, should "not perform any concerts for approximately seven days with complete rest and antibiotic treatment to cure his respiratory infection and prevent any damage."

PHOTOS: Billboard Music Awards Best and Worst Moments

As a result, John canceled his Sin City shows for his "Million Dollar Piano" residency on Thursday, Saturday and Sunday.

"It feels strange not to be able to perform these 'Million Dollar Piano' concerts at The Colosseum," John said in a statement. "I love performing this show, and I will be thrilled when we return to The Colosseum in October to complete the 11 concerts soon to be scheduled. All I can say to the fans is sorry I can't be with you. I hope to see you soon at this wonderful theatre at Caesars Palace."

Ticket holders can exchange tickets or get refunds at their respective venues.