ISTANBUL • Turkish investigators were permitted to search Saudi Arabia’s Consulate on Monday, 13 days after journalist Jamal Khashoggi vanished while visiting the mission, even as President Donald Trump dispatched Secretary of State Mike Pompeo to discuss the case with King Salman, the Saudi ruler.

As pressure mounted on Saudi Arabia to disclose what it knows about Khashoggi’s fate, U.S. officials began predicting over the weekend that the Saudis would inevitably admit complicity in the possible death of Khashoggi and claim a “botched operation,” said one person familiar with the discussions.

Over the past few days, Saudi officials have discussed issuing a statement that, in part, would mention a botched operation and call for the punishment of culpable officials, according to another person with knowledge of the discussions. The statement would be issued only after Saudi Arabia reached an agreement with Turkey on how to proceed with the investigation, the person said.

Trump said Monday that he talked for about 20 minutes with the king Monday and that the Saudi leader firmly denied the kingdom’s involvement in Khashoggi’s disappearance.

“I don’t want to get into his mind, but it sounded to me like maybe these could have been rogue killers,” Trump added. “Who knows? We’re going to try getting to the bottom of it very soon, but his was a flat denial.”

It was not clear whether Trump’s mention of “rogue killers” was his speculation, a theory he had heard from King Salman or intended as confirmation that Khashoggi had been killed in the consulate, as Turkish investigators have concluded.

Saudi Arabia has strenuously denied knowledge of Khashoggi’s whereabouts, saying that he walked out the consulate soon after entering on Oct. 2, without providing evidence.

Trump said Pompeo has license to travel wherever necessary, including Turkey, to investigate what happened. Trump first announced Pompeo’s trip in a tweet in which he said Saudi Arabia is “working closely with Turkey to find answer.”

Trump said he stressed the importance of the case to Salman. “The world is watching. The world is talking. And this is very important to get to the bottom of it. And I think he understands that very well,” Trump said. “He did say, very strongly, that he’s dealing with Turkey; that they’ve come to an agreement, that they’re investigating it together. And I think that’s a good thing.”

Khashoggi’s family issued a statement Monday urging an “independent, impartial and internationally recognized investigation” into the journalist’s disappearance.

“Following our father’s disappearance two weeks ago and his apparent murder, our family has been absolutely horrified and traumatized. As we await definitive answers and facts from multiple ongoing investigations, we believe it is imperative to launch an independent, impartial and internationally recognized investigation in order to provide us — and the many who loved him — with much needed clarity and resolution,” the statement said. “As we mourn, we are grateful to those who respect our privacy during this difficult time, so that our family’s distress is not overwhelmed by those who seek to politicize our tragedy. Our only hope now is for our family to be reunited safely so that we may find comfort and support in one another and to continue to seek answers.”

Trump’s comments came hours before a team of Turkish investigators arrived at the Istanbul consulate to conduct a search of the premises with Saudi Arabia’s cooperation. Turkish officials had complained publicly in recent days that the Saudis were refusing to allow a search of the property.

An agreement allowing the inspection to proceed came after King Salman called Turkish President Recep Tayyip Erdogan on Sunday. Salman thanked him for welcoming the kingdom’s proposal to set up a “joint working group” to probe Khashoggi’s disappearance, a Saudi statement said.

But hours before the Turkish forensic team arrived, journalists photographed a cleaning crew entering the consulate, hauling buckets and mops and what appeared to be bottles of cleaning supplies. When the Turkish investigators entered the consulate building, some wearing white protective gear, they “smelled chemicals had been used,” according to two officials in contact with the investigators.

Khashoggi lived in self-imposed exile in the United States for the past year and wrote columns in The Washington Post criticizing the Saudi leadership. He visited the Saudi consulate on Oct. 2 to obtain documents related to his upcoming wedding, but he was never seen leaving.

The Saudi government has faced pressure to reveal his fate. Turkish officials have released details of their investigation, including video that suggests a team of Saudi agents was dispatched to Istanbul to either capture Khashoggi or kill him.

The Turkish government has also told the Trump administration that it possesses audio and video recordings of what occurred inside the consulate that day. U.S. officials have said this material supports the conclusion that Khashoggi was interrogated, tortured and then killed.

U.S. officials have also said that the crown prince of Saudi Arabia, Mohammed bin Salman, ordered an operation to lure Khashoggi from his home in Virginia back to Saudi Arabia and then detain him, according to U.S. intelligence intercepts of Saudi officials discussing the plot.

Trump has warned that Saudi Arabia would face “severe punishment” if it was found to have killed Khashoggi. And on Sunday, Britain, France and Germany released a joint statement expressing “grave concern” about Khashoggi’s case and calling for a “credible investigation.”

A Saudi statement Sunday said the kingdom rejects “threats and attempts to undermine it, whether by threatening to impose economic sanctions, using political pressures, or repeating false accusations.”

Democrats in Congress ridiculed the theory, floated by Trump, that “rogue killers” had slain Khashoggi.

“Been hearing the ridiculous ‘rogue killers’ theory was where the Saudis would go with this,” Sen. Chris Murphy, D-Conn., a member of the Senate Foreign Relations Committee, said in a tweet. “Absolutely extraordinary they were able to enlist the President of the United States as their PR agent to float it.”

As part of a growing international backlash against the Saudi government, an increasing number of prominent business leaders and companies have said they will no longer attend a major investment conference scheduled to be in Saudi Arabia this month.

Members of the inspection team enter Saudi Arabia’s Consulate in Istanbul on Monday. Turkey and Saudi Arabia are conducting a joint “inspection” on Monday of the consulate, where Saudi journalist Jamal Khashoggi disappeared nearly two weeks ago, Turkish authorities said.

the associated press