06/13/2011 AT 09:50 AM EDT
Clarence Clemons, the legendary saxophonist and member of Bruce Springsteen's E Street Band, has suffered a stroke, according to multiple reports.
A source confirmed to the Associated Press that Clemons, 69, had the stroke but had no further information on his condition.
Springsteen's top fan site
, meanwhile, posted a "miracles are happening" update on Clemons Monday. "His vital signs are improving. He's responsive. His eyes are welling up when we're talking to him. He was paralyzed on his left side, but now he's squeezing with his left hand," the post read. "The next five days will still be critical. But he's a fighter."
Clemons's nephew, Jake Clemons, also a saxophonist, updated his Facebook status on Monday to read: "Please do not lose Hope!"
first reported the stroke, saying that "members of the E Street Band were advised to get down to Florida as soon as possible." Rolling Stone
says Clemons had dealt with a series of medical problems over the past decade, including having both knees replaced and spinal fusion surgery.
But his health had seemed to be improving. Just last month, he performed with Lady Gaga
on the season finale of American Idol