Colombian President Juan Manuel Santos has rejected proposed mediation by Rev Jesse Jackson over FARC rebel-held hostage.

Juan Manuel Santos said only the Red Cross would be allowed to be involved, because he did not want “a media spectacle”.

Jesse Jackson had agreed to go to Colombia next week to seek the release of former US marine Kevin Scott Sutay, held by leftist FARC (Fuerzas Armadas Revolucionarias de Colombia) rebels since June.

The FARC say they want to free Kevin Scott Sutay to boost peace talks.

During a visit to Cuba on Saturday, Rev Jesse Jackson had agreed to mediate, following a FARC statement saying his “experience and probity” would speed up the process of freeing Kevin Scott Sutay, a veteran of the war in Afghanistan.

However, President Juan Manuel Santos reacted quickly, writing on Twitter: “Only the Red Cross will be allowed to facilitate the release of the North American kidnapped by the FARC. We won’t allow a media spectacle.”

Rev Jesse Jackson had agreed to go to Colombia next week to seek the release of former US marine Kevin Scott Sutay, held by leftist FARC rebels since June

Earlier this month, during a visit to Colombia, Jesse Jackson had called on Colombia’s largest rebel group to release Kevin Scott Sutay.

The left-wing rebels responded by releasing a statement on Saturday inviting the civil rights leader to participate in the negotiations over the ex-soldiers’ release.

Hours later, Jesse Jackson accepted the invitation in Cuba, where he had met rebel leaders who are in Havana for peace talks with the Colombian government, as a service “to Kevin Scott, his family and our nation.”

“We have made contact with the State Department urging them to contact as quickly as possible the nearest of kin of Kevin Scott because his release is imminent,” he said.

In their statement, the FARC say they have not yet released Kevin Scott because the government has not “fulfilled the minimum conditions required” for freeing him.

Earlier this week, the left-wing rebels had requested the involvement of former Senator Piedad Cordoba in the release process, but President Juan Manuel Santos also dismissed this to avoid a “media spectacle”.

As a result, on Friday Piedad Cordoba sent a letter to the FARC declining to participate.

The freeing of Kevin Scott would “contribute to a positive mood” in the continuing peace talks with the Colombian government in Cuba, the FARC says.

So far, officially there has been agreement on only one of six points on the agenda – land reform.

Five decades of internal conflict in Colombia have led to the displacement of hundreds of thousands of people.