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Live updates on Friday 17 June 2016
All campaigning ahead of the EU referendum has been suspended after the killing of Labour MP Jo Cox and David Cameron has said Britain has lost "a great star".
The BBC's James Landale assesses the impact of the murder on political discourse in the UK:
Following the death of Batley and Spen MP Jo Cox, the world's media has descended on Birstall:
Victoria Derbyshire
Labour's Anna Turley has joined her fellow MP Clive Betts to pay tribute to Batley and Spen MP Jo Cox on the Victoria Derbyshire programme.
Like Jo Cox, Ms Turley was first elected to Parliament in the 2015 general election.
She says many new parliamentarians are "shocked and taken aback at how much aggression there is towards MPs".
She adds that security "needs to be looked at, but Jo would not want us to be hidden, behind walls".
BBC News England
She was a self-proclaimed "proud Yorkshire lass" whose work for charity took her around the world and whose political success led her to Westminster.
Image source, AFP/Getty ImagesJo Cox MP, who died on Thursday after being shot and stabbed in her constituency in Birstall, was elected as MP for Batley and Spen in the 2015 General Election.
The 41-year-old mother-of-two increased Labour's majority to 6,051.
Prime Minister David Cameron led the many tributes to her on Thursday. He described her as a "bright star". You can read her full obituary here.
Batley Parish Church will be open, external until 16.00 today so people can pay their respects to Jo Cox MP and her family.
The church says there will be a book of condolence and candles to light.
Image source, Batley Parish Church
Image source, Batley Parish Church
Image source, Batley Parish Church
BBC Radio 4
A man arrested in connection with the killing of Batley and Spen Labour MP Jo Cox has been named locally as Tommy Mair.
Mrs Cox was shot and stabbed yesterday afternoon in what police describe as a “horrific” assault.
BBC reporter Ross Hawkins has spoken to Tommy Mair's neighbours:
At Westminster, floral tributes are being laid this morning in tribute to Batley and Spen MP Jo Cox who was shot and killed in Birstall on Thursday.
Image source, Reuters
Image source, Reuters
Image source, ReutersCampaigning in the EU referendum remains suspended until tomorrow as a mark of respect following the death of Batley and Spen Labour MP Jo Cox.
Today Programme
BBC Radio 4
Jo Cox "was an absolute hero", according to Halifax Labour MP Holly Lynch, who was elected in 2015 - the same year as her late colleague
Image source, PA"She had young children, she had a family and that was a balancing act for Jo, but she made it look so easy," the Halifax MP said.
Ms Lynch (pictured right with Mrs Cox) says she had "dynamism and clarity", a passion and compassion for her constituents and beyond, but was someone who knew "we won't be here forever" and every opportunity needed to be taken.
Ms Lynch said it was important to take safety concerns "very seriously but not let it stop you from being an effective MP".
"I will never be able to forget what's happened to Jo and it's incredibly sad and you do have to bear in mind the safety of your staff," she added.
Flags fly at half mast on Batley Town Hall this morning in memory of Jo Cox MP.
Image source, Batley
Clare Mcdonnell
Reporter, BBC 5Live
I’m in the market square at the top of Market Street in Birstall this morning, about 100 yards from the blue and white police tape lines where Jo Cox MP was stabbed and shot yesterday.
She only became an MP last year, and her death at the age of 41 with a young family has drawn a huge reaction from the people she served.
The aroma of flowers is quite overpowering. People here have been leaving tributes here last night and this morning.
There's a note that says, "RIP Jo Cox, a friend and a fantastic campaigner. A bright, shining star has gone out tonight".
A live BBC TV debate on the UK's future in Europe has been cancelled following the death of Batley and Spen Labour MP Jo Cox.
Image source, PAThe 41-year-old died on Thursday after being shot and stabbed following a constituency surgery in Birstall, West Yorkshire.
First Minister Carwyn Jones and Plaid Cymru leader Leanne Wood were due to make the case for the Remain side.
James Landale
BBC diplomatic correspondent
The ability of MPs and their staff to engage with constituents goes to the heart of our parliamentary democracy.
Image source, ReutersMPs can represent us here at Westminster only because every week they go back home and meet us face to face.
There will inevitably be another debate about MPs' security. Many are often subject to physical attack. But politics can't happen from behind a ring of steel.
Jo Cox's death is not just an awful tragedy. It is also an assault on our democracy.
Jenny Eells
Reporter, BBC Radio Leeds
I was in Batley last night after the news broke that the local MP Jo Cox had been killed in nearby Birstall.
Residents there paid tribute to "our Jo":
Former Labour leader Ed Miliband has praised Brendan Cox, the husband of murdered Batley and Spen MP Jo Cox, for his "extraordinary dignity, love and compassion".
In a statement, Mr Miliband added: "Brendan, we all stand with you and grieve with you."
Image source, Getty ImagesQuote MessageMy heart breaks for the loss of Jo Cox and for Brendan and their kids. She was so full of life and joy. Words feel hopeless right now."
Ed Miliband, Former Labour Party Leader
The Leeds West Labour MP Rachel Reeves says her constituency office will be closed today with "safety in mind" following the death of Batley and Spen MP Jo Cox.
Speaking to Liz Green on BBC Radio Leeds in the last few minutes she says it's about safety.
Quote MessageWe have to think not only about our own safety but also our staff... They work in our offices, in our constituencies. I think until we know more, it's right we do this."
Rachel Reeves, Leeds West Labour MP
This morning, floral tributes left by well-wishers have started to gather outside the boarded-up office of Batley and Spen MP Jo Cox.
At Whitehall and Downing Street today flags will fly at half mast following the tragedy.
Holyrood and Buckingham Palace will also lower their flags.
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Tributes continue to flow in for Jo Cox MP, who set up the All Party Parliamentary Group on Syria with Conservative MP Andrew Mitchell.
Image source, ReutersWriting in the Daily Telegraph, external, he describes her as "a force of nature, a five-foot bundle of Yorkshire grit and determination absolutely committed to helping other people".
The Secretary of State for International Development also describes the "fearless" way she gave the Russian ambassador a "rollicking" over his country's actions in Syria, leaving the diplomat "discomforted", and said the best word for her was "ballsy".
Cathy Killick
Journalist, BBC Look North
People in Birstall are attempting to come to terms today with the loss of one of their - Labour MP for Batley and Spen Jo Cox.
Mrs Cox is the first member of the House of Commons to be murdered in office since 1990.
As events unfolded yesterday, I was one of the first to arrive on the scene in Birstall: