In a statement, Ch Supt Kate Anderson of Lincolnshire Police said: “Officers were called to the scene in Fountain Lane, Boston, at approximately 6.20pm. yesterday. “A nine-year-old girl has sadly died as a result of what we believe to be a stab wound. We have arrested two people in connection with the incident. “We believe this is an isolated incident. We are following extensive lines of inquiry and have committed many resources to this research. You will see more police officers patrolling the area and we have a large number of specialist detectives brought in to assist the investigation. We are not yet able to release the victim’s name. “Her parents are being supported by specially trained officers at this very difficult time and I can only imagine the grief and pain they are going through. Their welfare and the welfare of those he knew is our priority.”