U.S. Secretary of State Mike Pompeo says Saudi Arabia has made a “serious commitment” to hold senior leaders and officials accountable in the case of missing journalist Jamal Khashoggi.

Pompeo was in Saudi Arabia for meetings with Saudi Crown Prince Mohammed bin Salman. He offered his assessment after talks with the Saudi leadership and said the crown prince again denied any knowledge of what happened to Khashoggi at the Saudi consulate in Istanbul.

Turkish officials say there is evidence that the U.S.-based writer for The Washington Post was killed and dismembered at the consulate.

Saudi Arabia has called the allegations “baseless.” Pompeo’s statement said the Saudis acknowledged that something had happened to Khashoggi but were not specific.