London, October 4 : Apple says that the rumours that its chief executive Steve Jobs suffered a heart attack are untrue.
The rumours started spreading after the publication of a report by online citizen journalist site iReport, and appearing on other blogs and forums shortly afterwards.
However, an Apple spokesperson has now refuted the report.
"The rumours that he has had a heart attack are untrue," the Telegraph quoted Apple as saying.
Technology bloggers, analysts, and investors have been concerned about the health of the Apple chief executive for some months.
When the iPhone 3G was launched in San Francisco in July, Jobs' gaunt appearance caused a flurry of worry, and led to speculation that the pancreatic cancer he successfully fought in 2004 had returned.
In September, an online news wire service accidentally published Jobs' stock obituary, which was swiftly removed after the error had been spotted.
At last month's "Let's Rock" event, to unveil a new iPod line-up, Jobs appeared less thin and in good spirits, and joked that reports of his death had been greatly exaggerated.