The Pentagon announced Thursday that four inmates were transferred from the Guantanamo Bay prison to Saudi Arabia, dropping the prison’s population to 55. “The United States is grateful to the government of the Kingdom of Saudi Arabia for its humanitarian gesture and willingness to support ongoing US efforts to close the Guantanamo Bay detention facility,” the Pentagon said in a statement. The news comes amid reports President Barack Obama is attempting to empty the facility as much as possible prior to Inauguration Day.