A 34-year-old man has been arrested in connection with the murder of Olivia Pratt-Korbel.
The schoolgirl, nine, was shot dead after a masked gunman burst into her family home in Knotty Ash, Liverpool, before firing on August 22.
Her mother, Cheryl Korbel, 46, was injured as the gunman chased convicted burglar Joseph Nee into their property at about 10pm.
Merseyside Police said on Thursday evening that a man from the area has been taken to a police station where he will be questioned by detectives.
Officers said the investigation into Olivia's murder is ongoing and continues the appeal for information.
Image:
Andrew Teebay Liverpool Echo)The force had already arrested nine other men as part of the investigation but all had been bailed.
The reward offered in the hunt for the killer had been increased to £200,000.
Announcing Crimestoppers's biggest single reward offer last week, the charity's founder and chairman 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.
Image:
Julian Hamilton/Daily Mirror)"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."
Olivia was taken to at Alder Hey Children's Hospital but pronounced dead the same day as the shooting.
Police added the investigation is ongoing and it continues to appeal for people with information to come forward to assist in bringing those responsible to justice.
Anyone with information is asked to DM @MerPolCC or contact @CrimestoppersUK on 0800 555 111.
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