Chris Heaton-Harris welcomes response of First Minister and deputy First Minister following "shocking news" on Friday
The Secretary of State for Northern Ireland also welcomed the appointment of Gavin Robinson as the DUP's interim leader after Sir Jeffrey Donaldson's resignation.
Chris Heaton-Harris has welcomed the response of Northern Ireland First Minister Michelle O'Neill and deputy First Minister Emma Little-Pengelly following "shocking news" on Friday.
The Secretary of State for Northern Ireland also welcomed the appointment of Gavin Robinson as the DUP's interim leader after Sir Jeffrey Donaldson's resignation.
Mr Heaton-Harris said in a statement: "It has been two months since we saw the return of Stormont.
"In that time we have seen how the political parties of Northern Ireland can work together, with the First and deputy First Ministers demonstrating in word and deed their commitment to making Stormont work for everyone in Northern Ireland.
"Following the shocking news of Friday morning, I welcome their commitment to ensure this great work continues and can guarantee the UK Government will continue to work with all the political parties to build strongly on this progress.
"I also welcome the appointment of Gavin Robinson as interim leader of the DUP. I look forward to working with him to deliver on our commitments contained within the command paper 'Strengthening the Union'.
"We will continue to work alongside the Executive to make NI a great place to live, work and invest."
Green Party leader and Transport Minister Eamon Ryan has said the message of stability from Stormont leaders in the wake of Sir Jeffrey Donaldson's resignation was "really important".
"I think the message from the various party leaders that they're going to provide that stability and continue delivering for the people up north is really important," he said, speaking in Dublin.
"We have a North South Ministerial (Council) coming up and we'll be very much encouraging the use of the institutions, the need for political leadership.
"I think all the leaders up north and all the parties have an obligation, in my mind, to provide that now."
First Minister of Northern Ireland Michelle O'Neill has said that her priority is stability and cohesion in the wake of Sir Jeffrey Donaldson's shock resignation.
"My priority as First Minister is to provide that stability, to work with all the other party leaders, all those who form our Executive," she said, speaking in Dublin at an event to commemorate the 1916 Easter Rising.
"We're a four-party coalition and I think now more than ever, what we need to see is cohesion.
"I have over the course of the last couple of days spoken to all the other party leaders, including the new interim leader of the DUP. And it's really really important now that we knuckle down and.. do the business of government."
Asked if leaders will meet: "I've spoken to everybody over the course of the last number of days and we remain engaged.
"Our collective priority now has is around cohesion, it's around leadership, it's around working together and it's around making politics work for today, tomorrow and into the future."