A member of the US military mans the guard post before sunrise at Camp Delta, part of the US Detention Center in Guantanamo Bay, Cuba. (Photo: AFP)
Washington: The United States will transfer four detainees to Saudi Arabia from the Guantanamo prison in the next 24 hours, a U.S. official said on Wednesday, in President Barack Obama's final push to shrink the inmate population despite pressure from President-elect Donald Trump to halt such releases.