A special election to replace Arizona Republican Rep. Trent Franks will be held in April 2018, with a primary on Feb. 27.

Gov. Doug Ducey issued a proclamation Monday setting the date of the special election for April 24.

Franks resigned last week amid allegations he discussed surrogacy with staff members.

Franks originally said he would resign on Jan. 31, as the House Ethics Committee it would investigate potential harassment. But on Friday, after more details of his alleged behavior came to light, he said his resignation would be effective immediately.

In a statement, Franks said last week: "I have recently learned that the Ethics Committee is reviewing an inquiry regarding my discussion of surrogacy with two previous female subordinates, making each feel uncomfortable," Franks added. "I deeply regret that my discussion of this option and process in the workplace caused distress."

Rep. John Conyers, D-Mich., and Sen. Al Franken, D-Minn., also announced they would be resigning last week amid allegations of sexual misconduct.