A British member of Parliament is in critical condition after an attack in her constituency in northern England on Thursday, British police said, with media reports suggesting she had been shot and stabbed.
Jo Cox, 41, who's with the opposition Labour Party, was attacked as she prepared to hold a meeting for constituents in Birstall near Leeds.
West Yorkshire Police said a 52-year-old man was arrested by armed police and a woman in her 40s had suffered serious injuries.
"Very concerned about reports Jo Cox has been injured," Prime Minister David Cameron said on Twitter.