A 34-year-old man has been arrested on suspicion of the murder of nine-year-old Olivia Pratt-Korbel.
Olivia was killed in Dovecot, Liverpool on 22 August after a gunman fired shots into her home at about 10pm as he chased another man.
A spokesperson for Merseyside Police said: “The investigation into Olivia’s murder is ongoing and we continue to appeal for people with information to come forward to assist us in bringing those responsible to justice.
“Anyone with information is asked to DM @MerPolCC or contact @CrimestoppersUK on 0800 555 111.
“If you have any CCTV/dashcam/smart doorbell footage that could help our inquiries they can be downloaded on the dedicated public portal for Olivia’s murder, which will go straight through to the investigation team.”