(CNN) The fiancée of the murdered Washington Post columnist Jamal Khashoggi declined an invitation from US President Donald Trump to visit the White House, she said Friday.

"The statements Trump made in the first days around his invite and the statements he made afterward opposed each other. They were simply statements to gain public sympathy," Hatice Cengiz said during an interview with the pro-government Turkish channel Haber Turk.

Cengiz had previously appeared open to visiting Washington, saying last week that if Trump "makes a genuine contribution to the efforts to reveal what happened inside the Saudi consulate in Istanbul that day, I will consider accepting his invitation."

But Cengiz said Friday that she would only go to the White House if the administration takes action on Khashoggi's case.

"I do not think of going to the United States," she told Haber Turk. "Whether I will go or not will depend on the formation of conscience."

Saudi journalist Jamal Khashoggi with his fiancee Hatice Cengiz.