U.S. Senator Chris Murphy called on the country’s intelligence community Wednesday to probe allegations that a “high-level Saudi government official” hacked Amazon CEO Jeff Bezos’ phone.

In a letter to the Office of the Director of National Intelligence and FBI, Murphy urged the agencies to “investigate the allegations that a high-level Saudi government official illegally compromised and stole personal data” from Bezos’ phone and “possibly other U.S. citizens as part of a campaign to intimidate his opponents.”

The senator also requested a briefing to Congress on any current investigation, preliminary and final conclusions.

Last week, Agnes Callamard, the UN

Read more: US senator calls for probe of Bezos phone hack