British police opened a probe on a crowdfunding campaign that sought to raise £10,000 to assassinate campaigner Gina Miller, the Sunday Mirror reported.

The GoFundMe campaign first started in April but was reported to the police last week. The GoFundMe platform took down the page and apologized for any distress to Ms Miller.

Gina Miller is an investment manager and philanthropist. She is also a major litigation activist that has won two significant for the Brexit process Supreme Court cases. With her first victory, she forced the government to seek the consent of parliament to invoke Article 50, triggering negotiations to leave the EU. In September, she won a case that ruled the suspension of parliament by prime minister Boris Johnson illegal.

Since her first victory, she has been threatened with rape and death, both against her person and against her family. Since she has employed round-the-clock security.