The 29-year-old was arrested on suspicion of assisting an offender, Merseyside Police said, and was being questioned by detectives. Three properties in West Derby are also being searched, the force said. Four other men arrested in the fatal shooting of nine-year-old Olivia were released by police on Wednesday. Image: Olivia’s mother Cheryl Korbel urged the attacker to come forward Olivia was shot at her home last month when a gunman chased Joseph Nee, a convicted burglar, into the house in Liverpool’s Dovecot area at around 10pm. Cheryl Korbel described her daughter as “amazing” and “loving life” when she spoke for the first time this week. The 46-year-old said: “You know you’ve made a mistake so you have to own it. “As I’ve taught my kids, you do something wrong, you make it. “If someone is hiding these weapons, they need to speak up because they need to be off these streets.” He added: “Everyone she met, everyone fell in love with her. She left a mark on everyone she met.” “She may well have only been nine, but she packed a lot in those nine years. She never, ever stopped talking – and that’s what I miss the most because I can’t hear her talk.” Merseyside Police said: “The investigation into Olivia’s tragic murder is ongoing and we have yet to build a strong body of evidence so we can bring those responsible to justice.” A 34-year-old man who was arrested as a suspect in the murder of the nine-year-old girl was released under restrictive conditions. Read more: Olivia’s mother speaks publicly for first time Father insists Olivia’s death ‘cannot be in vain’ Mourners ask to wear ‘pink’ at schoolgirl’s funeral Three other men, aged 29, 34 and 41, who were being held on suspicion of assisting an offender, were also released on bail. None of the men who entered the home had ties to the family. A service will be held for the nine-year-old in Liverpool on September 15. Police have appealed to anyone with information to come forward. Detectives said people with a CCTV, dash cam or smart doorbell can upload them to a special portal for the investigative team.