has been admitted to a hospital in Tokyo, PEOPLE confirms.
"Since contracting a virus last week that led to the postponement of tour dates, Paul received successful medical treatment at a hospital in Tokyo. He will make a complete recovery and has been ordered to take a few days rest. Paul has been extremely moved by all the messages and well wishes he has received from fans all over the world," his rep says in a statement.
The former Beatle, 71, has canceled concerts in Tokyo
and his website
informed fans over the weekend that doctors had ordered "complete rest."
McCartney added a personal message: "Unfortunately my condition has not improved overnight. I was really hoping that I'd be feeling better today. I'm so disappointed and sorry to be letting my fans down."
A tour stop scheduled for Seoul also was postponed on Wednesday, and McCartney himself issued a statement.
"I was really looking forward to visiting and playing in South Korea for the first time and I'm sorry to be letting fans down. I'm very disappointed by this and hope to be able to visit soon."
The Sankei Sports
newspaper in Japan was the first to report the news.
Reporting by CARLOS GREER