The 75-year-old singer became the first songwriter to be awarded the prize last week (13Oct16), when the Nobel panel experts praised him for "having created new poetic expressions within the great American song tradition".

However, Dylan has yet to acknowledge his win, and even removed a reference to the prize from his website.

Now, Per Wastberg, a member of the Swedish Academy who awards the prize, has called the veteran musician "impolite and arrogant" after ignoring the efforts members of the academy have made to contact him.

"He is who he is," he said, adding he wasn't surprised Dylan had ignored the news, but added the snub was "unprecedented".

"We were aware that he can be difficult and that he does not like appearances when he stands alone on the stage," he told Sweden's Dagens Nyheter newspaper in a separate interview, according to BBC News.

It is still not known if Dylan will travel to the Swedish capital of Stockholm to receive the prize at the official ceremony on 10 December (16).

However, if he doesn't attend, a ceremony celebrating his lengthy and iconic music career will go ahead as planned, Wastberg confirmed.

Dylan has appeared in public since he was announced as the winner, even performing at the Desert Trip festival in California earlier this month (Oct). He took to the stage last weekend (15-16Oct16) as a newly-crowned Nobel prize winner, but failed to mention his historic win during his set.