11.40amAhead of "critical and defining talks" with DUP leader Peter Robinson, Deputy First Minister Martin McGuinness tells a press conference in Stormont's Great Hall that his party is frustrated by a lack of progress.
“Three years on, we are waiting for the DUP to deliver and honour their commitments.”
He said that he was “at pains” to make the Assembly work – it was “his life’s work”.
NoonTalks begin, without officials present, in the First Minister's office.
In London, British prime minister Gordon Brown tells his weekly news conference of the issues holding up devolution of justice. He says: “I am actually confident that all these issues are soluble.”
12.35pmTalks end after Sinn Féin indicates by text message that no progress has been made. A party official simply texts the word "over".
1pmBrian Cowen and Gordon Brown begin talks in Downing Street. They had tried to organise a meeting in London over the weekend but had to settle for phone contact.
3pmThe Taoiseach and prime minister leave together for Belfast having been briefed on the continuing deadlock.
Mr Cowen said: “It is very important that we get a successful outcome to these discussions and we believe that our going [to Hillsborough Castle] should help bring a conclusion to the devolution issues.”
4pm (approx)DUP gives a position paper to Sinn Féin on contentious differences on parading, the key issue separating the two sides. Gerry Adams updates Assembly members.
5pmThe two premiers arrive in the same convoy of 11 cars and 17 PSNI motorcycles. Minister for Foreign Affairs Micheál Martin steps on to the lawn at Hillsborough Castle to insist that the two governments do not "contemplate failure". The situation remains "very fluid".
9pmSinn Féin's Gerry Kelly emerges from the talks to say they are there to agree a date for the transfer of powers. The DUP's Arlene Foster and Sammy Wilson announce the gathering is a "contrived crisis" and matters would be better served by remaining calm. Ms Foster says the issues can be addressed successfully.
9.30pmNorthern Secretary Shaun Woodward and Mr Martin confirm Mr Cowen and Mr Brown will stay for further talks with all parties, throughout the night and today, if needed.
DAN KEENAN