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There’s still no commitment to filming “Killers of the Flower Moon” in Oklahoma, where the events took place, but filmmaker Martin Scorsese’s team continues to return to Pawhuska for research.

“We had a group from Mr. Scorsese’s artistic team here a couple of weeks ago to do research, look around and ask questions, making sure they got things right,” said Osage Nation Principal Chief Geoffrey Standing Bear on Wednesday.

He said the team was led by longtime Scorsese production designer Dante Ferretti, who has won three Academy Awards for art direction, including two for Scorsese films (“The Aviator” and “Hugo”).

“He was a very nice man. They were here for a couple of days. More than once they said, ‘We’ll be back.’ We certainly hope so,” Standing Bear said.

There has been a lot of buzz ever since the announcement last year that Scorsese would direct and Leonardo DiCaprio would star in a movie about oil, greed and murder in Osage County, where the events happened, as early as this summer.

While that timetable seems to have changed, what remains is the filmmaking legend’s interest in making a film adapted from the acclaimed best-selling book “Killers of the Flower Moon: The Osage Murders and the Birth of the FBI.”