Abstract: A lock arrangement having a driver element which has two outer surface sections. The first section has a first geometrical cross-section configuration which engages an outer lever spindle in both the locked and unlocked condition. In the unlocked condition, the first section also engages an outer driver spindle which rotates with the outer lever handle and outer lever spindle and engages the latch retraction structure for retraction of the latch. In the locked position, the second outer surface section of the driver element is aligned with outer drive spindle and the second surface section is free of driving engagement with the outer drive spindle such that retraction of the latch is prevented when the outer lever handle is rotated. A solenoid is provided on the interior of the lock and controls the movement of the driver element between the locked and unlocked positions.