British lawmaker Jo Cox killed

Bitter political rivals Prime Minister David Cameron and Labour Party leader Jeremy Corbyn prepare to lay flowers in Birstall, northern England, for slain Labour MP Jo Cox on June 17, 2016.

Prime Minister David Cameron lays flowers, watched by, from top of image, Hilary Benn, MP for Leeds Central, Speaker of the House of Commons John Bercow, Speaker’s chaplain Reverend Rose Hudson-Wilkin and Labour Leader Jeremy Corbyn on June 17, 2016, near scene where Labour MP Jo Cox was fatally wounded in Birstall, northern England.

Kim Leadbeater, left, speaks to the media in Birstall, where her sister, Labour MP Jo Cox, was fatally attacked. At right are their parents, Jean and Gordon Leadbeater.

Jean Leadbeater, center, the mother of slain MP Jo Cox, embraces her daughter Kim Leadbeater, with her husband Gordon, at the scene of a memorial for Cox in Birstall, northern England, on June 18, 2016.

Slain MP Jo Cox’s constituency office in Batley, northern England, on June 18, 2016.

A police van believed to be carrying Thomas Mair, 52, the man accused of killing a British MP, arrives at Westminster Magistrates Court on June 18, 2016, in London.

Flowers cover the houseboat where slain British MP Jo Cox and her family lived when they were in London on the River Thames, June 17, 2016. Cox represented Batley and Spen in West Yorkshire, northern England, in Britain’s federal lawmaking body.

Flowers and photographs cover the houseboat where slain British MP Jo Cox and her family lived when they were in London on the River Thames, June 17, 2016. Cox represented Batley and Spen in West Yorkshire, northern England, in Britain\’s federal lawmaking body.

British police officers and forensic experts investigate the Birstall home of 52-year-old Thomas Mair, who is charged in connection with the killing of British MP Jo Cox.

Police search the Birstall home of 52-year-old Thomas Mair, who is charged in connection with the killing of British MP Jo Cox, who was shot and stabbed in her constituency on June 16, 2016.

Floral tributes and handwritten notes left in memory of slain British MP Jo Cox in Parliament Square, London, on June 17, 2016.

Floral tributes and handwritten notes left in memory of slain British MP Jo Cox in Parliament Square, London, on June 17, 2016.

Labour Leader Jeremy Corbyn, center, attends a vigil to slain Labour MP Jo Cox in Parliament square in London on June 16, 2016.

Members of the public gather at a memorial for slain British British MP Jo Cox in Parliament Square, London, on June 17, 2016.

British MP Lucy Powell wipes away tears as people gather to leave flowers and tributes in Birstall, northern England, in memory of slain British MP Jo Cox on June 17, 2016.

Weeping mourners leave flowers and tributes in Market Square in Birstall, northern England, in memory of slain British MP Jo Cox on June 17, 2016.

Mourners leave flowers and tributes in Market Square in Birstall, northern England, in memory of slain British MP Jo Cox on June 17, 2016.

Police officers continue to work the scene of the killing of British MP Jo Cox on June 17, 2016, in Birstall, northern England.

Police forensics experts examine clothing, shoes and a handbag at the scene where Labour Member of Parliament Jo Cox was fatally attacked in Birstall, England, on June 16, 2016.

A handbag and shoes lie on the ground as police cordon off an area after Labour Member of Parliament Jo Cox was fatally attacked on June 16, 2016, in Birstall, England.

Police cordon off an area after Labour Member of Parliament Jo Cox was attacked on June 16, 2016, in Birstall, England.

British lawmaker Jo Cox, shown in May 2015, was shot, stabbed and killed by an assailant in Birstall, northern England, on June 16, 2016.