Trump did not answer Acosta's question about whether he mentioned Khashoggi's murder during his breakfast meeting with the prince, but stressed the important relationship between the U.S. and Saudi Arabia.
Several reporters asked him whether he would raise the issue of Khashoggi with Salman, but Trump ignored them and seemed irritated by.
The CIA has determined the crown prince ordered Khashoggi's killing, while a United Nations rights investigator has also said he should be investigated over the murder, saying there was "sufficient credible evidence" of his responsibility. Some lawmakers have called on Trump to disavow Saudi leadership since Khashoggi's death past year.
"I've spoke to his father at great length", Trump said, referring to King Salman.
Trump praised the "spectacular job" that the Crown Prince is doing with reforms in the Kingdom, highlighting what he has done for women especially.
Erdogan has repeatedly charged at the Saudi Crown Prince after Khashoggi was murdered when he had entered the Saudi Consulate in Istanbul in October a year ago.
The report added that Prince Mohammed must have been aware of attempts to cover up the crime, including a forensic cleaning of the consulate, and urged a formal criminal investigation into the case.
The Issue was discussed during bilateral talks that also covered deepening ties in trade and investment, energy security and countering terrorism, Indian foreign secretary Vijay Gokhale said. They are creating millions of jobs in this country.
Saudi Arabia denies the 33-year-old crown prince had any knowledge of the killing.
Prince Mohammed had also invited Mr Modi to be a guest at an worldwide conference later this year and the prime minister had accepted, Mr Gokhale said. The front page of the Japan Times' Saturday newspaper featured a G-20 "family photo" of dozens of world leaders waving at the camera, while Trump is engaged in conversation with Salman, standing next to him.
The United States has blamed Iran for recent attacks on oil tankers in Gulf shipping lanes, which the United States is working with Saudi Arabia and other allies to protect.
"We are able to declassify ... in actual fact I produce now not want to focus on intelligence", Trump acknowledged.
On Saturday, Trump declined to say whether he would address the death of Khashoggi, who was a critic of the crown prince, in his meeting.