This story first appeared on CNBC:

The fatal attack on a pro-European British lawmaker just a week ahead of the key Brexit referendum vote has shaken politicians and voters across the U.K.

While this is the first time in nearly a quarter of a century that a U.K. politician has been murdered, the case bears startling similarities to the assassination 13 years ago in Sweden of pro-EU Anna Lindh.

Days before Sweden would vote on whether to join the euro in 2003, a 46-year-old lead campaigner for Sweden’s to adopt the euro was stabbed while shopping in a Stockholm department store. She had been shopping for clothes for a euro zone debate scheduled that evening. The next day, on September 11, Social Democratic foreign minister Lindh died from her injuries.

Both sides of the Swedish political campaign suspended their activities following the news, with TV ads campaigns cancelled and billboard and print media ads withdrawn.

On the following Sunday, Swedes rejected proposals to adopt the common currency.

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