The victim is identified as 27-year-old Renato Silva, originally from Coimbra, Central Portugal, who currently lives with his parents near Carcassonne, France.
Manuel Correia, a family friend, told Lusa News Agency that Renato Silva had been driving his car when the attacker opened fire, killing the passenger and injuring Renato.
According to reports, after being shot, the Portuguese national still managed to activate the GPS tracker on his mobile phone and call his mother, who in turn called the police, triggering the ensuing manhunt for the perpetrator.
Renato Silva was still conscious when the authorities found him, and called his mother again from hospital before being placed in an induced coma.
He was expected to be kept in a coma at least until the middle of this week, when doctors were due to decide whether Renato could be operated on to remove the bullet.
The string of attacks in Carcassonne and Trèbes, by a man claiming to be acting on behalf of so-called Islamic State, caused four deaths, including that of the suspect.
Redouane Lakdim, 25, of Moroccan descent, is believed to have opened fire on Renato Silva’s car, before hijacking it and driving to a supermarket where he held workers and shoppers hostage, claiming to be acting on behalf of so-called Islamic State.
Last Friday’s attacks also left another fifteen people injured, three of whom are in a serious condition, the French internal affairs ministry said.