Production on hit TV show GOSSIP GIRL ground to a halt on Wednesday (24Feb10) after a fight broke out between a set security guard and a paparazzo.
Gossip Girl star Blake Lively was shooting a scene in Midtown Manhattan with guest actor William Baldwin when a group of photographers began gathering around the set.
Tension grew between the bodyguards and the snappers as they ignored repeated requests to step back to avoid ruining the take.
But cameras had to stop rolling altogether when one stubborn photographer directed the racist 'N' word towards a member of security, sparking a violent confrontation which left the offending snapper nursing a bruised forehead.
An eyewitness tells WENN, "The paparazzi were persistently ignoring the security and production staff, and the scene erupted. I clearly saw an exchange of verbal and physical blows."
Police were called to the scene but neither party decided to press charges and filming resumed on Wednesday afternoon.
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The film is expected to continue without Mendes' involvement.