Twitter has shut down the accounts of Danielle Stella, a Republican challenger to Rep. Ilhan Omar (D-Minn.) in Omar’s bid for reelection, after Stella twice tweeted about hanging the congresswoman.

The campaign account for Stella, a candidate in Minnesota’s 5th Congressional District, posted Tuesday that “If it is proven @IlhanMN passed sensitive info to Iran, she should be tried for #treason and hanged.”