The FBI arrested a Tucson man for leaving three threatening phone messages at Republican Rep. Martha McSally’s congressional office.

Steve Martan, 58, is a campus monitor at a school in the Tucson area. He allegedly left messages telling McSally to “be careful” when she returns to Tucson and that her days “were numbered,” as well as a specific threat to shoot her.

According to a criminal complaint filed Friday, Martan told FBI agents that he was angry about McSally voting to back President Donald Trump’s agenda.

Many Republicans are facing anger from constituents in the wake of the House vote for the GOP’s health care reform bill, which has resulted in many avoiding traditional town hall meetings in their district.