The Supreme Court has rejected an eleventh-hour appeal from Troy Davis to prevent Georgia authorities from executing him for the murder of an off-duty police officer.

The court did not comment on its order late Wednesday, four hours after receiving the last-ditch request.

The filing by Davis' lawyers came after state officials refused to grant Davis a reprieve in the face of calls for clemency from former President Jimmy Carter, Pope Benedict XVI and others.

The high court previously granted Davis a stay of execution in 2008 and ordered a court hearing the following year to give Davis a chance to establish his innocence. A federal judge said Davis failed to do so, and the justices refused to review that finding.