A 26-year-old Hoppers Crossing man, a 26-year-old Footscray man, a 26-year-old Braybrook man and a 32-year-old Collingwood man have each been charged with murder.
All four are currently in custody over unrelated matters and will appear before Melbourne Magistrates’ Court via telecourt on 21 August.
Earlier today police also charged a 34-year-old Braybrook man with murder.
The charges follow an incident on 26 February where a 48-year-old man was allegedly assaulted by a group of men at the correctional facility.
He died in hospital on 29 February.