Two guns were used in the shooting which killed nine-year-old Olivia Pratt-Korbel in Liverpool, police have said.Detective Chief Superintendent Mark Kameen warned those who are "shielding" the culprit that they "will do everything legitimately possible to bring you to justice", adding: "It is beyond comprehension how anyone can protect a person who is responsible for killing a nine-year-old little girl."In an update on Thursday afternoon, Mr Kameen said the investigation had made "significant pr

Two guns were used in the shooting which killed nine-year-old Olivia Pratt-Korbel in Liverpool, police have said.Detective Chief Superintendent Mark Kameen warned those who are "shielding" the culprit that they "will do everything legitimately possible to bring you to justice", adding: "It is beyond comprehension how anyone can protect a person who is responsible for killing a nine-year-old little girl."In an update on Thursday afternoon, Mr Kameen said the investigation had made "significant progress" and that it was believed the gunman had brought two weapons with him when he "callously ran away from Olivia's house".