And back in the United States, an African-American prisoner in Georgia has been given an execution date for later this month despite several questions surrounding his conviction. Troy Davis was convicted of killing an off-duty police officer in 1989. Amnesty International has rallied behind his case, arguing that no physical evidence connected him to the crime. Seven out of nine prosecution witnesses have since recanted their testimony that was used to convict him for murder. Jurors were also unaware several witnesses signed affidavits under pressure from police — including one witness who said he had not read what he signed.