Vigils have taken place across Wales in memory of the late Mrs Cox. About 300 people gathered in Swansea's Castle Square, to lay flowers, light candles and listen to speakers pay tribute to the 41-year-old.

Aberavon MP Stephen Kinnock, who shared an office with Mrs Cox, said Jo Cox stood for the things that are:

A vigil is being held at Parliament Square - opposite the Houses of Parliament - in remembrance of Jo Cox, who was killed on Thursday.

Former Labour leader Ed Miliband has laid flowers in memory of the late MP.

BBC political correspondent Chris Mason, who is at the scene, says politics is so often "an environment associated with noise" and yet tonight "it's just silence".

Sky News

Former Labour shadow minister Caroline Flint says "it's still hard to absorb" what's happened to Jo Cox, and says her heart goes out to her husband, Brendan, and two children.

She describes the late MP as "a young woman who gave so much in her life" before she joined Parliament, and "she had so much more to give" as an MP.

"My memory of her... was this very positive person, funny, really committed to her work as an MP," she adds, and says: "She will be very, very sadly missed."

Sky News

Speaking to Sky News, former acting Labour leader Harriet Harman says killed MP Jo Cox tried to achieve her objectives by "bringing people together" rather than by "creating divisions".

She adds that whatever the reasons behind Jo's "tragic" death, "let's take a moment to reflect on how we do our politics better".

And she says: "Let's not have anyone using politician as a dirty word," - adding that politicians are part of democracy and "we're there for the people".  

Laura Kuenssberg
BBC political editor

Image source, getty images

The killing of Jo Cox will never be explained away.

It's stopped politics in its tracks today, different party leaders putting their differences aside to show respect.

And the referendum campaign where respect has been scarce is still on hold.

Insults and exaggerations are never far from political exchanges.

But the referendum campaign has included astonishingly harsh attacks on both sides, emotional appeals to our identity that go way beyond the usual. 

Read more from Laura

BBC Radio 4

West Yorkshire Police has said it is working with the North East Counter Terrorism Unit as the probe into the killing of 41-year-old Jo Cox continues.

It said: "The suspect in custody has been medically examined by two specialist medical practitioners who have determined that he is both fit for detention and fit for interview and detectives will continue to question the suspect during the day."

The statement also said:

Ed Miliband says Jo Cox's death shines a light on the way politics is conducted

The BBC understands that during the searches at Tom Mair’s house, detectives found Nazi regalia, including Nazi books and literature.

West Yorkshire Police said links to right-wing extremism and the suspect's mental health are lines of enquiry in their investigation into the death of Labour MP Jo Cox.

Mark D'Arcy
Parliamentary Correspondent

Image source, AP

The phrase "out of touch political elite" trips too easily from certain commentariat keyboards.

It's a kind of all-purpose, good-for-all-occasions criticism of any politician. "They don't exactly replicate my views? Out of touch…."

But I wonder how many of the glib trotters-out of that phrase spend hours sitting in damp church halls or down-at-heel municipal offices, trying to deal with benefits problems, housing problems, issues with the NHS and the myriad of other questions people bring to their MPs.

Plenty of people have pointed out that the constituency surgery is a vital link between Parliament and People, rubbing the nose of our political leaders in the gritty realities of ordinary lives - but it is not the only one.

By any standard, today's MPs are both more independent and more active than previous generations.

But there's a side of an MP's life that they don't talk about very much; fear.

Read more

A man has been charged over an alleged abusive phone call made to the office of Labour former minister Ben Bradshaw.

The 37-year-old man will appear before magistrates in Exeter on 5 July accused of an offence under the Malicious Communications Act, Devon and Cornwall Police said.

It is alleged a message was left on an answerphone in the Parliamentary office of Mr Bradshaw, Labour MP for Exeter.

News of the incident emerged following the death of Mr Bradshaw's colleague Jo Cox, who died on Thursday after being shot and stabbed in the street outside her constituency advice surgery in West Yorkshire.

A Devon and Cornwall Police spokesman said:

Jo Cox's constituency Labour Party have paid tribute to the Batley and Spen MP, describing her as "a wonderful friend" who "meant the world to us".

A statement said:

Image source, Brendan Cox

The family of Labour MP Jo Cox has set up a fund for people to donate, external to three causes close to her heart.

A post on the gofundme page says: "In celebration and memory of Jo Cox, we are raising funds to support three charities closest to her heart, chosen by her family."

The fund hopes to raise £50,000 for charities, including the Royal Voluntary Service, which helps combat loneliness in Mrs Cox's Batley and Spen constituency; Hope not hate, which seeks to challenge and defeat hate and extremism within local communities, and The White Helmets volunteer search and rescue workers in Syria.

The web page features an image of Mrs Cox standing beside her house boat - the same photo her husband, Brendan, posted on Twitter shortly after she was attacked on Thursday.

Image source, PA

EU referendum campaigning has been suspended nationally until Sunday, with less than a week before polling day, after the fatal attack on Labour MP Jo Cox.

The Remain and Leave groups, which have not campaigned since Thursday, have cancelled events planned on Saturday.

Meanwhile, Parliament, which was on a break for the referendum, will meet on Monday for tributes to Mrs Cox.

The mother-of-two died after being attacked in her constituency.

More here.