A 37-year-old man has been arrested in connection with the killing of nine-year-old Olivia Pratt-Korbel, Merseyside police have said.
The force said the man, from West Derby, had been arrested on suspicion of assisting an offender and remained in custody being questioned by detectives.
In a statement, 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.”
An 18-year-old man from the West Derby area of Liverpool was also arrested on Thursday on suspicion of assisting an offender.
Olivia was shot by a gunman who forced his way into her family home in the Dovecot area of Liverpool at about 10pm on 22 August.
The assailant was chasing a convicted burglar, Joseph Nee, who had burst into the house when Olivia’s mother, Cheryl Korbel, opened her front door to see what the commotion outside was.
On Tuesday Cheryl Korbel, who was also hurt in the shooting, appealed for the killer to hand themselves in.
In a video appeal, she said: “You know you’ve done wrong, so you need to own up. Like I taught my kids, you do something wrong, you own up to it.”