Sterling rallied from a two-month low against the euro on Thursday, extending gains after British police said Jo Cox, a lawmaker for Britain's opposition Labour Party, had died after being attacked earlier in the day.
Cox was one of the members of parliament advocating for Britain to remain in the European Union, an issue that will be decided in a referendum next week. Cox was attacked as she prepared to hold a meeting with constituents in Birstall near Leeds.
EU referendum campaigns were suspended on Thursday following Cox's killing, with the pro-EU Remain camp falling behind the Leave camp in polls.
"We're seeing a move in the pound rallying off its lows, the Treasuries coming off of their highs and the stocks coming off of their lows because of that," said Lou Brien, market strategist, at DRW Trading in Chicago.