The Nobel Prize committee has given up trying to reach musician Bob Dylan, days after he was awarded the Nobel Prize for Literature.
Dylan, 75, is yet to respond to the accolade, which was announced on Thursday. That evening he gave a concert in Las Vegas in which he spoke little, and did not mention the award.
On Friday he performed in Coachella, as part of the Desert Trip festival -- and was commended by The Rolling Stones, who performed after him, reported The Telegraph, London.
"I want to thank Bob Dylan for an amazing set," said Sir Mick Jagger. "We have never shared the stage with a Nobel Prize winner before. Bob is like our own Walt Whitman."
Keith Richards added: "I can't think of anybody that deserved it better."
But Dylan himself again failed to acknowledge it.
The Swedish Academy, which awards the prizes every October and organises the presentation in December, says it has not heard back from the Minnesota-born singer.
"Right now we are doing nothing. I have called and sent emails to his closest collaborator and received very friendly replies. For now, that is certainly enough," said Sara Danius, permanent secretary of the academy.
Danius said they did not know whether he planned to attend the December 10 ceremony, for winners to be presented with their awards in Stockholm from King Carl Gustaf.
"If he doesn't want to come, he won't come. It will be a big party in any case and the honour belongs to him. I am not at all worried. I think he will show up," Danius added.
Image: Bob Dylan. Photograph: Kevin Winter/Getty Images