Philippe Monguillot, 59, lost his mind after the attack in the southwestern city of Bayonne on July 5. Her family decided to cut vital support on Friday, Agence France-Presse news agency reported.
"We decided to let him go. The doctors were favorable and so were we," the victim's daughter, Marie Monguillot, 18, told AFP.
Four men were arrested and charged after the assault.
The attack took place on Sunday around 7:15 p.m. on bus 810 which was going to Biarritz after the bus driver had checked the ticket of one of the men and asked all four to wear masks, which are compulsory in the French public transport, according to the public. the prosecutor's office.
On Wednesday, Monguillot's family organized a march in their honor, with all the participants dressed in white.
"The Republic recognizes him as an exemplary citizen and will not forget him. The law will punish the perpetrators of this despicable crime", he wrote, describing the attack as "cowardly".
French Interior Minister Gérald Darmanin also expressed condolences to friends, family and colleagues at Monguillot.
"This heinous and cowardly act must not go unpunished. I will go tomorrow to Bayonne to make a security point in the city with the representatives of the State and meet the drivers of public transport and the unions", he said. he writes on Twitter.
The company that Monguillot worked for, Keoilis, has strengthened employee safety, deploying guards on some of its bus services in the region.