NEW : Davis ' lawyer files motions for his immediate release . NEW : Police chief calls the case ` ` clear - cut . '' Consulate General Raymond Davis has been jailed since the January 27 incident . The State Department says the man has diplomatic immunity .
NEW : Davis ' lawyer files petition for his immediate release . NEW : Police chief calls the case `` clear-cut murder '' Consulate employee Raymond Davis has been jailed since the January 27 shooting . The State Department says the man has diplomatic immunity .