U.N. investigator calls for probe into Iranian president-elect's role in 1988 killings

• “The scale of executions that we hear imply that it was a part of a policy that was being pursued ... It was not just one person,” Rehman told Reuters.
• Amnesty International earlier this month called for Raisi to be investigated for his alleged role in "crimes against humanity of murder, enforced disappearance and torture."

Driving the news: Raisi is under U.S. sanctions for a past that the U.S. says includes involvement as one of four judges who oversaw the 1988 killings, per Reuters.

• When asked about allegations Raisi said: “If a judge, a prosecutor has defended the security of the people, he should be praised ... I am proud to have defended human rights in every position I have held so far.”
• Rehman is expected to be sworn in as president during the first week of August.

What they're saying: "I think it is time and it’s very important now that Mr. Raisi is the president [-elect] that we start investigating what happened in 1988 and the role of individuals," Rehman told Reuters.

• "Otherwise, we will have very serious concerns about this president and the role, the reported role, he has played historically in those executions," Rehman said.

Go deeper: Conservative cleric Raisi elected Iran's president