The Prime Minister David Cameron has released a message marking the 25th anniversary of the Lockerbie tragedy.
New sheep sculptures, which have stirred up local opinion, were installed in Lockerbie town centre today.
One couple in Lockerbie received an extra special Christmas present, with the arrival of their baby daughter Faith.
A memorial service has taken place in the southern Scottish town of Lockerbie where Pan Am flight 103 came down on the evening of December 21 1988.
Wreaths were laid by the families of the victims of the Lockerbie bombing, many of whom had made the journey from the US to be there.
The service was led by the Rev John MacLeod, while readings and prayers were given by representatives of the Lockerbie Corps, Salvation Army, and the Queen.
The UK, US and Libya are to further "deepen" their cooperation, as the 25th anniversary of the Lockerbie bombing was marked in a memorial service today. In a joint statement, they said:
The Governments of Libya, the United Kingdom and United States of America reiterate their deepest condolences to the families of the victims of this terrible crime.
We want all those responsible for this most brutal act of terrorism brought to justice, and to understand why it was committed. We are committed to cooperate fully in order to reveal the full facts of the case.
We are striving to further deepen our cooperation and welcome the visit by UK and US investigators to Libya in the near future to discuss all aspects of that cooperation, including sharing of information and documents and access to witnesses.
Lockerbie has been a welcoming place for the relatives who died in the disaster, First Minister Alex Salmond said today.
Speaking to BBC News, Mr Salmond added: "Out of disaster, there are the bonds of friendship.
"I don't think you ever move on, you certainly never forget, but people do rebuild their lives and many have."
A special ceremony will take place at Dryfesdale cemetery in Lockerbie this evening, December 21, to mark the 25th anniversary of the Lockerbie bombing.
The service will mark the death of the 270 people killed when the Pan Am flight was blown up in 1988.
Families of the victims will be joined by US and UK dignitaries for tonight's service.
As we mark 25 years since the Lockerbie tragedy, my thoughts are with those who lost loved ones so close to Christmas.
The truth behind the Lockerbie bombing may never be known, according to a former British ambassador to Libya.
Former British ambassador Oliver Miles said he believes nobody could be brought to justice for the incident - but said he suspected former Libyan dictator Muammar Gaddafi was behind the bombing.
Mr Miles told the BBC:
It was such a shocking and enormous atrocity that clearly nobody was going to rest until the truth was found.
I don't think the truth possibly ever will be found so perhaps we will be talking about this for years to come.
I don't think anybody thinks he was the man behind the bombing, I think the question is whether he was one of the operatives who actually did what had to be done if it was a Libyan bombing - he's supposed to be responsible for getting the bomb on to the plane.
But I don't think anyone thinks he was the mastermind, so to speak - if there was a Libyan mastermind, it was Gaddafi.
While Gaddafi was still in power I never felt there was any real prospect of co-operation from the Libyan side. That's changed. We now have a Libyan regime that has no interest in concealing Gaddafi's crimes - rather the contrary.
Many people remember exactly where they were when they heard that a plane had crashed, just days before Christmas.
There are also those who actually witnessed the horror at Lockerbie first hand.
Some are only now, 25 years later, able to talk about their experiences.
The family of Abdelbaset al-Megrahi, the only person to be convicted of the Lockerbie bombing, say they plan to appeal against his conviction. Libyan Megrahi was convicted of the bombing of Pan Am flight 103 in which 270 people died 25 years ago.
Magrahi lodged a second appeal against his conviction from behind bars in Scotland where he was serving life for mass murder. However he dropped his case two days before he was released on compassionate grounds by the Scottish Government. He was suffering with prostate cancer.
Magrahi died last year protesting his innocence. Tonight, his brother said that his family plans to appeal the conviction. It comes as members of the UK Families Flight 103 group announced they are also considering their own appeal against Megrahi's conviction in a bid to reach the truth.
– Abdel-Hakim al-Megrahi, brother of Abdelbaset al-Megrahi
We want to appeal and we wish for the truth to be revealed and this is not just for our own benefit but also for the benefit of the families of the victims and for public opinion.
We need to know who committed this horrible crime. But, as you know, we as a family cannot afford to pay for the appeals process.
God-willing, the Libyan government will do this, but it has to be launched by the family first."