A woman has been arrested after standing behind shot Pc David Rathband and saying "bang, bang", police said.
The woman, who had red dyed hair and was dressed in blue denim and gold jewellery, apparently pretended to shoot a gun as she did so.
Pc Rathband, who was shot and blinded by gunman Raoul Moat during his rampage in July, was walking into Newcastle Crown Court when the prank took place.
A Northumbria Police spokesman said a woman, who has not been named, was arrested for a public order offence.
A witness said: "Pc Rathband was walking, approaching the front of the court building when this woman stepped out behind him and went 'Bang, bang'.
"He was being accompanied by a family liaison officer who turned round and saw this woman making a gun sign behind his back."
Pc Rathband has been in court most days since giving his prosecution evidence in the trial of two men alleged to have been Raoul Moat's willing accomplices.
Qhuram Awan, 23, of Blyth, Northumberland, and Karl Ness, 26, of Dudley, Gateshead, deny conspiracy to murder, the attempted murder of Pc Rathband, a firearms offence and robbery of a Northumberland fish and chip shop.
Ness also denies the murder of karate instructor Chris Brown. The trial continues.