Updated

Mexican singer Juan Gabriel was hospitalized in a Las Vegas hospital after feeling ill following a concert Sunday night.

According to reports, the singer, whose real name is Alberto Aguilera Valadez, was taken to Southern Hills Hospital in Los Vegas to be treated for pneumonia. Doctors reported he was in a "delicate" state, according to Mexican newspaper La Opinion.

According to Gabriel’s rep, the singer completed the concert in Sin City even though he had been feeling ill for a few days. The rep said Gabriel did not want to cancel his shows.

“He sang as best he could in Las Vegas; he felt very sick, but wanted to continue because ... he does not like to leave people hanging, much less his fans,” his rep said in statement, according to La Opinion. “After the show, he was taken to a hospital and was immediately evaluated and was diagnosed with pneumonia.”

The rep said the balladas crooner was in a "delicate" state and will be hospitalized for eight days.

"This means he will have to cancel some of his concerts, that he will reschedule, but for now, his health is most important,” the rep said.

Via Twitter, Gabriel, 64, reached out to fans following the news of his hospitalization.

“All is well! No need to worry, you just have to be careful! Thanks for all your messages and good wishes,” he said in Spanish.

The singer kicked off his "Volver" tour across the United States earlier this month, with a concert in Chicago followed by a performance in New York City's Madison Square Gardens, where he began to feel ill. He sang in Houston before going to Las Vegas and was expected to head to Los Angeles on Wednesday.

"One thing is for sure," his rep said. "This is the first time he had had to cancel because of illness.”

Shows scheduled for Wednesday and Thursday in Los Angeles were called off, along with a Saturday concert in San Jose, Calif. New dates for the shows were expected to be announced later in the week by tour producers CMN Events, according to a statement. It says the singer will return to the stage May 1 in Los Angeles.

Gabriel is known as "El Divo de Juarez" and is one of the best-selling Latin recording artists of all time, with more than 100 million albums sold in a career spanning decades. He was named Person of the Year in 2009 by the Latin Recording Academy, which produces the Latin Grammys.

The Associated Press contributed to this report.

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