Patti Smith forgets lines while performing Bob Dylan Nobel tribute

Patti Smith has given a stumbling performance of Bob Dylan's A Hard Rain's A-Gonna Fall at a gala ceremony for Nobel laureates.

The American rock star appeared either to forget the lyrics or was overcome with nerves and she apologised to the 1,500 guests at the event in Stockholm, which was marked by Dylan's absence.

"I apologise. I'm sorry, I'm so nervous," she said, asking the orchestra to start again, as the audience comforted her with applause.

Dylan, 75, is the first songwriter to be awarded the prestigious Nobel Prize in Literature for creating "new poetic expressions within the great American song tradition".

The singer had declined an invitation to attend the event and sent a thank you speech to be read out instead.

According to the Nobel Foundation, his prize should be presented to him in person sometime in 2017, either in Sweden or abroad.

Meanwhile, Colombia's president has collected the Nobel Peace Prize for reaching a deal with Marxist rebels to end the country's civil war.

Juan Manuel Santos said his award gave a boost to the "impossible dream" of halting the 52-year-old conflict in which 220,000 people died.

The leader called the prize a "gift from heaven" as he dedicated it to all Colombians - those killed but also the eight million displaced, and he said the accord was a "ray of hope" for solving conflicts from Syria to South Sudan.

Speaking at a ceremony in Oslo's City Hall, Mr Santos said: "With this agreement, we can say that the American continent from Alaska to Patagonia is a land in peace."

He reached a deal with rebels from the Revolutionary Armed Forces of Colombia, or FARC, earlier this year, but the accord was narrowly rejected by voters in a 2 October referendum, days before the Peace Prize announcement.

Then the government and FARC signed a new peace accord on 24 November.

It was approved by Congress, but controversially without a referendum demanded by a major opposition party.

The Nobel Committee praised Mr Santos as "a driving force" behind the agreement. He collected a gold medal, diploma and a cheque for 8m Swedish crowns (£690,000).