Detectives have arrested a 34-year-old man on suspicion of the murder of nine-year-old Olivia Pratt-Korbel in Liverpool in August, Merseyside police have said. Olivia was shot in the chest at her home in Dovecot in the city on 22 August. Her mother, Cheryl Korbel, 46, was injured as the gunman chased Joseph Nee into their property at about 10pm. Merseyside police said on Thursday evening that a man from the Dovecot area had been taken to a police station where he would be questioned by detectives. Officers said the investigation into Olivia’s murder is ongoing and they are continuing to appeal for information. The force had already arrested nine other men as part of the investigation but all have been bailed. The reward offered in the hunt for the killer had been increased to £200,000. Announcing Crimestoppers’ biggest single reward offer last week, the charity’s founder and chair, Lord Ashcroft, said: “This case has been incredibly shocking, not just for those who are directly affected but also for Liverpool and the nation as a whole. “I am delighted that with the support of a private donor, Crimestoppers can now offer a record £200,000 for information to catch Olivia’s killer. A precious young life has been lost so we need every effort to find those involved in this appalling killing.” Police have also revealed that the gun used to kill Olivia was a .38 revolver. Another firearm – a Glock-type self-loading 9mm pistol – was fired in the initial stages of the incident. Olivia’s funeral was held at St Margaret Mary’s Church in Knotty Ash earlier this month. Mourners wore pink ties, jackets, scarves and bows after her family asked people to wear a “splash of pink”. Cheryl Korbel carried a pink teddy bear into the service, during which she said: “Liv touched so many people’s hearts and was loved and adored by everyone. She will never be forgotten. I will never say goodbye but what I will say is goodnight, love you, see you in the morning.”