London, England (CNN) -- British singer Morrissey is following doctors' instructions to rest after he collapsed Saturday during a concert and was briefly hospitalized, a message on his Web site said Monday.
He was discharged from the hospital Sunday, the Web site said.
No further information as to his condition was offered.
Great Western Hospital manager Teresa Harding told CNN Sunday that the singer had been admitted as a precautionary measure, and did not reveal any details on his condition or what prompted his hospitalization.
Morrissey, 50, was scheduled to perform in Swindon, west of London, Saturday night. According to fan accounts on various Web sites, the singer collapsed after the first song.
A spokeswoman for Great Western Ambulance said ambulance was called to the concert venue just after 9 p.m. "He was treated on the scene and then taken to hospital," she said.
She asked to be identified only as a spokeswoman for the ambulance service, in line with British custom.
Morrissey, whose full name is Steven Patrick Morrissey, was the frontman of the seminal 1980s band The Smiths before embarking on a successful solo career. In a 2002 piece, British music magazine NME named The Smiths "the most influential artist ever" -- ahead of The Beatles.
His Web site said ticket holders for Saturday's show as well as a Monday night show should hold onto their tickets and "await news regarding potential new dates or refund."
The singer is scheduled to play at the Royal Albert Hall in London on Tuesday, his Web site said.
He has canceled or rescheduled more than a dozen planned concerts this year, according to his Web site.