(CNN) - Former Alaska Gov. Sarah Palin canceled a July trip to Sudan due to "scheduling problems," a source with knowledge of the trip confirmed to CNN Thursday.
Palin was scheduled to travel to the southern part of the war-savaged country with Franklin Graham, son of evangelical leader Billy Graham, to attend the July 9 independence ceremony, information she first told a London newspaper earlier this month.
"She is not going to Sudan due to scheduling problems," said the source, who would not speak on the record because Palin's travel itinerary is considered private.
Palin's representatives refused to comment on the trip. News of the cancelation was first reported by The Washington Post.
But a spokesman for Graham said he still plans to travel to the North African country and confirmed that he and Palin spoke on the phone last week.
"She would be a very good person to help draw attention to the plight of the Christians in South Sudan," Graham told The Post. "We've got George Clooney, we've got some Hollywood-type people. I'm very grateful for what Mr. Clooney has done. But we need everybody we can find."
The two traveled to Haiti in December to visit Samaritan's Purse relief projects. Franklin is president and CEO of the humanitarian organization.
Palin's decision follows several weeks of silence from the potential presidential candidate, raising questions about the future plans for her bus tour. She addressed the reports on her Facebook page Wednesday, saying she has jury duty and is "looking forward to hitting the open road again" when "the next leg of the tour continues when the time comes."
The former GOP vice presidential candidate traveled up the East Coast earlier this month on the first leg of her "One Nation" bus tour.