Two more people have been arrested in connection with the murder of Malakai McKenzie.
A 24-year-old man and a 21-year-old woman, from the Long Eaton area, were arrested yesterday afternoon (Sunday 29 April 2012), on the A42 near Birmingham, on suspicion of assisting an offender.
They are now in police custody in Nottinghamshire. A vehicle was also seized.
Detective Chief Inspector Tony Heydon, Senior Investigating Officer, said: "While clearly our main focus is arresting those responsible for the murder of Mr Mckenzie, we will pursue and arrest anyone who we suspect of assisting or harbouring offenders.
"Anyone with any information, whether you witnessed the incident or know who is responsible, please come forward. You can be assured you and your information will be treated in the upmost confidence."
More than 60 officers are dedicated to investigating the murder of 19-year-old Mr McKenzie, who was taken to the Queen’s Medical Centre with serious injuries during the early hours of Saturday 21 April 2012. He died later that day.
A Home Office post-mortem examination concluded that he died from a gunshot wound.
Officers believe Mr McKenzie, from Nottingham, sustained the fatal injury during a firearms incident in the car park of The Hubb, in Hucknall Road, Sherwood, at about 3.30am on Saturday 21 April.
A number of addresses have been searched and vehicles seized by police. Forensic examinations are also being fast-tracked to ensure vital evidence is analysed and collated as soon as possible.
Two other people, aged 19 and 17, have already been arrested and bailed in connection with the incident.
Witnesses or anyone with information is asked to call the incident room on 0115 844 6913, or Crimestoppers anonymously on 0800 555 111.
Sherwood Neighbourhood Policing Team