Lee Hickman 36-year-old man, from Huyton, Was the first person to be arrested for the murder of Olivia Pratt-Korbel, Mr Hickman who has been jailed previously for his part in a violent robbery in which £365,000 was snatched from a security van outsi

A dispute between family-based crime groups has been the catalyst for the bungled assassination attempt of 35-year-old Joseph Nee that led to Olivia Pratt-Korbel being shot dead. The nine-year-old was at home with her mum and older siblings in Kingsheath Avenue, Dovecot, when a gunman burst through the door at around 10pm on Monday, August 22. The killer had been in pursuit of 35-year-old Joseph Nee, who forced his way into the house after noticing Olivia's mum, 46-year-old Cheryl Korbel, open the door to see what was going on outside. The gunman managed to get his arm through the door, despite what police described as "the best efforts" of Ms Korbel, and fired a shot which hit Ms Korbel in the wrist and then struck Olivia, who was stood directly behind her mum. He then continued to shoot, wounding Nee in the torso and legs. Detectives have identified the two guns used during the shooting through ballistic analysis, but the guns themselves have not yet been found. They include a .38 revolver that killed Olivia, and a Glock-type self-loading 9mm pistol which was fired at the gunman's initial target, Joseph Nee. Crimestoppers has increased the reward on offer for information leading to the conviction of the killer from £50,000 to an unprecedented £200,00 - the biggest single reward offered in any case in the charity's history. Here is everyone who has been arrested as part of the investigation so far: A 36-year-old man from Huyton now known as Lee Hickman (Main Suspect), was arrested on August 25 on suspicion of Olivia’s murder as well as the attempted murder of her mum and Joseph Nee. He was later bailed. A 33-year-old man was arrested in Dovecot on August 25 on suspicion of murdering Olivia as well as two counts of attempted murder. He was later bailed. A 34-year-old man from Liverpool was arrested in Runcorn on September 4 on suspicion of murder and two counts of attempted murder. He was later bailed. A 41-year-old man from Knowsley was also arrested on September 4 on suspicion of assisting an offender. He was later bailed. A 29-year-old man was arrested in Liverpool on September 4 on suspicion of assisting an offender. He was later bailed. A 34-year-old man from Liverpool was arrested more than 100 miles from the city on the M42 on suspicion of assisting an offender. He was later bailed. A 29-year-old man arrested on Thursday on suspicion of assisting an offender. An 18-year-old man, from West Derby, was arrested on September 9 on suspicion of assisting an offender. He was later bailed. A 37-year-old man, from West Derby, was arrested on September 9 on suspicion of assisting an offender. He was later bailed. Charlotte Hadfield £200,000 reward to catch Olivia's killer Crimestoppers is offering a £200,000 reward to anyone with information that helps to convict Olivia's killer. The reward comes after a private donor put forward £100,000, which was matched by the charity's founder Lord Ashcroft to make the biggest single reward in its history. Information qualifying for the reward must be passed to Crimestoppers via the 0800 555 111 number or the secure anonymous online.