London, June 16: Jo Cox, the Labour Party MP who died on Thursday after reportedly being shot and stabbed in Birstall village in northern England, just a week before the crucial referendum, was a leading campaigner for Britian to remain in the European Union, the police said.
A 52-year-old man was arrested in connection to the murder. Though the police refused to divulge the motive behind the act at this moment.
Police later announced the death of Cox -- a leading campaigner for Britain to remain in the 28-member bloc -- and said a 52-year-old man had been arrested.
One of the last tweets of MP Jo Cox
The anti-exit camp suspended its campaigning for the day following the tragedy while the pro-exit group said its 'battle bus' was withdrawing for the day.
Prime Minister David Cameron, too, cancelled a planned rally during a visit to Gibraltar as part of his campaign for Britain to stay in the EU. The referendum is scheduled for June 23.
Forty-one-year-old Cox, a mother of two, was left bleeding on the pavement following a street attack in the broad daylight.
Sky News televisionc cited unconfirmed reports saying the shooter shouted "Britain first" in a possible a reference to a far-right group by the same name.
Cox worked on finding solution to Syrian civil war
Cox worked on finding a solution to the Syrian civil war as a top priority and was critical of Britain's reluctance to deepen its military involvement against Islamic State as part of that effort.