Vandals left graffiti on a wall, dumpster and sign at George Mason Elementary School on July 25, according to authorities. 
    
Alexandria police did not comment on the graffitis content, saying only that the three locations around the 2600 block Cameron Mills Road school were tagged with spray paint. 
    
There were no witnesses and no surveillance footage of the incident, which was reported at 1:42 p.m., according to police reports.