British MP Jo Cox has died after brutal stabbing & shooting attack - police
Cox was shot and stabbed outside Birstall library. She was airlifted to nearby Leeds General Infirmary in a critical condition not long after 13:00 BST, but reportedly died before she arrived.
Various eyewitness accounts say the MP was shot during a row with a man. The gun has been described as either antique or hand made.
Some eyewitnesses report the attacker may have targeted Cox deliberately, shooting her up to three times, as well as beating and stabbing her while she was on the ground.
There are unconfirmed reports that the attacker, named in the British media as Tommy Mair, shouted "Britain First" during the attack.
Another man reportedly intervened to help her, and was also injured.
The MP was left lying bloodied on the ground.
Police have confirmed that weapons, including a firearm were recovered during the subsequent arrest of the suspect.
Investigators say they are not looking for anyone else in connection with the incident, and regard this as a lone attack. A number of areas are still being searched by police.
Just after the incident, West Yorkshire Police said in a statement: "At 12.53 today, police were called to a report of an incident on Market Street, Birstall, where a woman in her 40s had suffered serious injuries and is in a critical condition.
"A man in his late 40s to early 50s nearby also suffered slight injuries.
Forty-one-year-old Jo Cox was Labour MP for Batley and Spen, and leaves behind a husband and two young children.
She is described as being a campaigner and activist. Before her election to parliament Cox had been head of policy at Oxfam.
She had also previously been national chair of the Labour Women's Network, a senior advisor to the anti-slavery charity Freedom Fund, and was current Chair of the Friends of Syria All-Party Parliamentary Group.
The Remain and Leave sides are suspending their campaigns for next week's EU referendum following the attack.
On Wednesday, Cox had been tweeting in support of the Remain campaign, of which she is a strong advocate.
Prime Minister David Cameron has cancelled a trip to Gibraltar where he was to attend an anti-Brexit rally.