Girl, 7, hurt in gun incident to undergo hearing tests He said the youngster's mother had been left "shocked" and had now submitted a formal complaint to the force. "For this to happen inside a police headquarters is just unbelievable," said Mr Mann. Are the police firearms procedures wrong, or have they been broken? It is not just the firing of the weapon, but that the weapon was apparently charged to begin with. I want to know if the weapon was properly checked prior to its handling. Mr Mann added: "Why are the police demonstrating firearms in front of children in the first place?" Chris Leslie, MP for Nottingham East, added: "I am all in favour of taking children to see the work that police do but children and guns should never mix." The victim is believed to have suffered a minor injury to her lip as the weapon was fired, causing an ammunition cartridge to fall to the floor and bounce to hit her in the face. Nottinghamshire Police was accused of a cover up by councillors who sit on the county's police and crime panel. Tony Egginton, who represents Mansfield District Council on the panel, said:"We need to take appropriate action when there are young people involved in regards to safeguarding but this did seem to be kept under wraps." The girl, who is thought to be from Worksop, was one of a number of school children from across Notts who were visiting the Sherwood Lodge headquarters with their parents during half-term after winning a colouring competition. Phill Matthews, of the Notts Police Federation, which represents rank-and-file officers, claimed proper safety measures had been in place. He said: "All weapons have in-built safety and obviously in this case it did not stop a discharge, but they prevented death or serious injury even if the weapon went off." The officer has been moved off firearms duties pending the outcome of an inquiry. Many police forces deem a gun being accidentally fired as a "negligent discharge," which can lead to disciplinary action.