GOP senators said on Monday that they were frustrated by a closed-door briefing from the administration on last year's slaying of U.S. resident and Washington Post contributor Jamal Khashoggi. 
Members of the Trump administration briefed the Senate Foreign Relations Committee on Monday evening about an investigation, ordered by members of the panel last year, into Khashoggi’s death.
But Republicans on the committee appeared underwhelmed by the meeting, indicating that they didn't learn new information. 
"The Senate will have to decide whether it’s going to impose its own sanctions," Rubio said. 

"We learned very little," Romney added.
Khashoggi was last seen entering the Saudi Consulate in Istanbul on Oct. 2. The Saudi government said the killing was carried out by rogue agents as part of an interrogation that went off track — an explanation that has been met with heavy skepticism by lawmakers on Capitol Hill. 
Khashoggi's death has emerged as a sticking point between senators, who believe Saudi Crown Prince Mohammed bin Salman is responsible for the slaying, and President TrumpDonald John TrumpTed Cruz knocks New York Times for 'stunning' correction on Kavanaugh report US service member killed in Afghanistan Pro-Trump website edited British reality star's picture to show him wearing Trump hat MORE, who has stuck by Saudi Arabia.
The U.S. intelligence community has reportedly determined that the Saudi crown prince ordered the death of Khashoggi, who was a critic of the government, even as Trump has stopped short of echoing that view. 
"It could very well be that the Crown Prince had knowledge of this tragic event — maybe he did and maybe he didn’t! That being said, we may never know all of the facts surrounding the murder of Mr. Jamal Khashoggi," Trump said in a statement last year.  

Several Senate Democrats filed a bill late last month to force the Trump administration to issue a public report on Khashoggi's death. And the Senate passed a resolution late last year that named the Saudi crown prince as "responsible," in a significant break with the administration. 

Sen. Jim RischJames (Jim) Elroy RischBolton exit provokes questions about Trump shift on Iran GOP senators say Trump deserves compatible national security adviser after Bolton firing Trump moves forward with billion F-16 sale to Taiwan MORE (R-Idaho), the chairman of the Foreign Relations Committee, said in a statement after Monday night's briefing that they were also reviewing written material from the State Department. 
"As the investigation continues and we learn more, we will keep all apprised," Risch said. "This is a work in progress, and we will not let it go.”