Media playback is unsupported on your device Media caption President Obama: "We need to make sure that we don't start turning on each other"

US President Barack Obama has made a plea for religious tolerance, amid continuing outrage over a church's threat to burn copies of the Koran.

Pastor Terry Jones from Gainesville, Florida, says he wants clarity on whether a planned New York mosque will be moved from near Ground Zero.

His son says Pastor Jones will not now go ahead with the burning planned for anniversary of 9/11.

The pastor flew to New York late on Friday, hoping to discuss the mosque.

"There will be no Koran burning tomorrow" (Saturday), Pastor Jones' son, Luke, said, although he added that he could not say for certain what future developments might be.

Mr Obama told reporters at the White House: "We have to make sure we don't start turning on each other."

He repeated his concerns the burning would endanger the lives of US troops.

The proposed Koran burning prompted an angry reaction from Muslim countries around the world and was heavily criticised by world leaders.

Protests were reported in Afghanistan and Pakistan on Friday, as people emerged from Eid prayers marking the end of the holy month of Ramadan.

While the president will be criticised for speaking out, not answering the questions clearly would be unthinkable Read Mark's thoughts in full

Three people were shot by private security guards when a protest near a Nato base in north-east Afghanistan turned violent.

Mr Obama appealed for people in the US to "rekindle the spirit of unity" felt after the 2001 terror attacks on New York.

"We are all Americans that stand together against those that would do us harm," he said.

"It is absolutely important now for the overwhelming majority of American people to hang on to that thing that is best in us - that is our belief in religious tolerance, our clarity about who our enemies are.

"I will do everything I can, as long as I am president of the United States, to remind the American people that we are one nation under God. We may call that god different names but we are one nation."

Global protest

Mr Jones is the pastor of the tiny and previously little-known Dove World Outreach Center in Gainesville, Florida and the author of a book entitled Islam is of the Devil.

He planned to stage an International Burn a Koran Day on Saturday, the anniversary of the 9/11 terror attacks on New York, saying the book was "evil".

Controversy timeline July Terry Jones announces his church in Gainesville, Florida, will stage International Burn a Koran Day. National Association of Evangelicals asks the church to call off the event

Terry Jones announces his church in Gainesville, Florida, will stage International Burn a Koran Day. National Association of Evangelicals asks the church to call off the event 18 August Gainesville Fire Rescue denies Mr Jones a fire permit, saying the church will be fined if it goes ahead.

Gainesville Fire Rescue denies Mr Jones a fire permit, saying the church will be fined if it goes ahead. 6 September Top US commander in Afghanistan Gen David Petraeus warns that burning could put troops' lives in danger

Top US commander in Afghanistan Gen David Petraeus warns that burning could put troops' lives in danger 8 September Vatican condemns bonfire plans as "outrageous"

Vatican condemns bonfire plans as "outrageous" 9 September US President Barack Obama joins international condemnation. Mr Jones then says he has cancelled the burning, before saying it is only suspended.

US President Barack Obama joins international condemnation. Mr Jones then says he has cancelled the burning, before saying it is only suspended. 10 September Protests break out in Afghanistan and Pakistan, and President Barack Obama calls for religious tolerance in the US Media swamps Florida church In quotes: Koran-burning threat Why burning would have been legal Profile: Terry Jones and the Dove World Outreach Center

On Thursday, he said he was calling off the protest after the group behind a controversial Islamic cultural centre due to be built near Ground Zero agreed to relocate it.

The group has denied making such a deal with Mr Jones, who later said he was only putting the burning on hold until he had met the centre's organisers.

Mr Jones said he was travelling to New York to meet Feisal Abdul Rauf, the imam behind the centre.

The cleric said on Friday that he was "prepared to consider meeting with anyone who is seriously committed to pursuing peace" but confirmed that he had no current plans to meet Mr Jones.

In an extraordinary news conference later on Friday, Mr Jones and a spokesman KA Paul read out two telephone numbers and gave the imam two hours to contact them to clarify his position.

Mr Paul said there was confusion over the issue and he wanted it to be "crystal clear" whether or not the mosque was being moved.

As the deadline passed, Mr Paul said they had not heard from the imam, but that he could "confirm 100% that there will not be Korans burning tomorrow".

Mr Paul said later that Pastor Jones boarded a flight bound for New York on Friday evening.

The BBC's Paul Adam's, in Washington, says developments in the story are getting increasingly bizarre.

Three days ago, very few Americans had ever heard of Pastor Terry Jones. Now his pronouncements are competing for airtime with those of the president of the United States, our correspondent adds.

'Age of the internet'

In his remarks, Mr Obama denied that his administration's intervention in the affair had elevated it to greater prominence.

The FBI had visited Mr Jones to urge him to reconsider his plans and he was telephoned by US defence secretary Robert Gates.

"We've got an obligation to send a very clear message that this kind of behaviour or threat of action puts our young men and women in harm's way," said Mr Obama.

"In the age of the internet, it is something that can cause us profound damage around the world, so we've got to take it seriously."

He said the uproar had already made life more difficult for US military personnel serving overseas.

"The idea that we would burn the sacred text of someone else's religion is contrary to what this nation stands for, contrary to what this nation was founded on," he said.

"My hope is that this individual prays on it and refrains from doing it."