The husband of murdered British MP Jo Cox has urged people to "fight against the hatred that killed her."
She was taken to hospital in Leeds where she died of her injuries.
In a statement, Brendan Cox said: "Today is the beginning of a new chapter in our lives. More difficult, more painful, less joyful, less full of love. I and Jo's friends and family are going to work every moment of our lives to love and nurture our kids and to fight against the hate that killed Jo.
"Jo believed in a better world and she fought for it every day of her life with an energy, and a zest for life that would exhaust most people.
"She would have wanted two things above all else to happen now, one that our precious children are bathed in love and two, that we all unite to fight against the hatred that killed her. Hate doesn't have a creed, race or religion, it is poisionous.
"Jo would have no regrets about her life, she lived every day of it to the full."
Ms Cox served as the Labour MP for Batley and Spen for just over a year before her death at the age of 41.
During that time the married mother of two carved out a reputation as a plain speaker and solid operator who was spoken of as a future minister.
Anna Turley, a Labour MP from Redcar who was a friend of Ms Cox, described her as a wonderful and inspiring person.
Speaking on RTÉ's Six One News, Ms Turley said she was devastated and shocked by the death of a phenomenal public servant.
Ms Turley said Jo and Brendan Cox were involved in international development and aid, saying: "She was a real inspiration. She was a leading light in a future generation of politicians."
She said people need to pause and think about the way politics is conducted in the UK, adding that she has been increasingly concerned in the year that she has been an MP.
Ms Turley added that she has been shocked by the anger and aggression faced by MPs, who are just trying to make a difference.
British MPs across the political spectrum also react with horror to the news of her death, with Prime Minister David Cameron calling it "a tragedy."
He said Ms Cox "was a committed and caring MP. My thoughts are with her husband Brendan and her two young children."
Labour leader Jeremy Corbyn said the country would be "in shock at the horrific murder" of the MP, who was a "much loved colleague".
Both side of Britain's upcoming referendum on EU membership have suspended their campaigns as a mark of respect.
A Buckingham Palace spokesman said that Queen Elizabeth will write privately to Mr Cox.
Taoiseach Enda Kenny and Minister for Foreign Affairs Charlie Flanagan also paid tribute to Ms Cox.
What an appalling tragedy. Jo Cox, a mother doing her public duty, her life taken away. My deepest sympathies to her family.
— Enda Kenny (@EndaKennyTD) June 16, 2016
