At 1:00AM, someone breaks a window in the back of a store an…

At 1:00AM, someone breaks a window in the back of a store and robs the safe.  On the way out, they cut themselves on a piece of broken glass, this blood was determined to be O-.   A suspect is captured and their blood is tested.  There is no agglutination with Anti A or Anti B antibodies, but there is agglutination with anti-Rh.  Is this person a possible suspect?  Please explain why or why not.