Two more men have been charged with murder over the fatal bashing of Victor Codea at Adelaide High School last month.
The two Salisbury North men, aged 23 and 29, are expected to appear in the Adelaide Magistrates Court today.
Police said Mr Codea, 24, of Ridleyton, was set upon by up to four men in the school car park and beaten on August 28.
He was taken to the Royal Adelaide Hospital on the night of the incident, but died a few days later.
There are now four men charged with Mr Codea's murder.
On Wednesday, SA Police arrested and charged a 24-year-old man with murder.
A 23-year-old man from Adelaide had a charge of aggravated assault causing harm upgraded to murder on September 7.
Police believe Mr Codea, who had faced drug charges, was wrongly accused by his assailants of being a police informant.
Police are seeking further information from the public as investigations continue.
