Two women, aged 24 and 25, have been arrested on suspicion of assisting an offender over the murder of 18 year old Cole Kershaw in Bury last week
They remain in police custody for questioning.
Four men who were previously arrested have been released on bail.
Enquiries are ongoing.
A dedicated Major Incident Portal has been set up. Members of the public can, anonymously, share information directly with the investigation team viahttps://mipp.police.uk/operation/06GMP20N07-PO1
