Jammeh also has agreed to release into Jackson's custody Tuesday two Gambian-American prisoners. Jackson plans to escort out them out of the country immediately.
"It will be a special joy to be able to bring two Americans back home to their families," Jackson said.
One of the men is Amadou Scattred Janneh. He is a former University of Tennessee professor who also served as Gambia's minister of communications. He was arrested in July 2011 for printing T-shirts that read "Coalition for Change" and "End Dictatorship Now" on the front and "Freedom" on the back.
He was convicted of treason and started serving his life sentence in January.