Police issue alert for missing teen

May 21, 2009 8:41:27 PM PDT
Chicago police have issued a missing person's alert for a teenager who hasn't been seen since Wednesday morning.Alexander Langendorf, 18, vanished after his mother dropped him off at Lincoln Park High School on Chicago's North Side.

Langendorf apparently never entered the school or attended classes.

If you have seen the teen please call police.