Saudi Arabia’s foreign minister wants everyone to just chill about Jamal Khashoggi, the journalist who was allegedly tortured, murdered and dismembered in a Saudi consulate earlier this month.

“This issue has become fairly hysterical,” Adel al-Jubeir said at a security forum in Bahrain on Saturday. “I think people have assigned blame on Saudi Arabia with such certainty before the investigation is complete.”

Al-Jubeir said 18 suspects in Khashoggi’s death would be tried in Saudi Arabia, rejecting Turkey’s demand for them to be extradited.

Khashoggi, a Washington Post columnist who has written critically of the kingdom’s leadership, went missing after entering a Saudi consulate in Istanbul on Oct. 2.

Turkish officials allege a Saudi Arabian hit squad carried out the murder, with many commentators blaming the country’s de facto ruler, Crown Prince Mohammed bin Salman, for the appalling act.

Members of the assassination squad celebrated inside their taxi right after the murder, their driver was quoted as saying in the Times of London.

“They were very cheerful. They smoked and drank alcohol in the car,” the unnamed driver told a Turkish paper, according to the Times.

Saudi Arabia has changed its account of what happened to Khashoggi several times. After initially claiming he walked out of the consulate alive, Saudi officials later said he died in a brawl inside the building. Last week, the kingdom acknowledged that the killing was “premeditated.”

President Trump panned the shifting Saudi explanation.

“They had a very bad original concept, it was carried out poorly and the cover-up was the worst in the history of cover-ups,” he told reporters last week.

Saudi Arabia has announced the dismissals of six officials who worked directly under bin Salman.

“We’re trying to uncover what happened. We know that a mistake was committed,” al-Jubeir said Saturday. “We know that people exceeded their authority and we know that we’re investigating them.”

Khashoggi’s remains have yet to be found. Turkish media have published conflicting reports saying officials may be focusing on a well in the garden of the Saudi diplomatic compound.