They are between 15 and 16 years old.
Three minors were indicted for "attempted murder", "failure to assist a person in danger" and "meeting theft".
This follows the violent attack last week of a 15-year-old teenager in Rosny-sous-Bois (Seine-Saint-Denis), in a coma since, according to the Bobigny prosecution.
One was placed in pre-trial detention, the second is under judicial supervision.
Seriously injured in the head on October 31, the 15-year-old teenager, in a coma since the attack, was transferred to the Parisian hospital of Pitié-Salpêtrière.
The circumstances of the assault are still unclear.
According to a source close to the investigation, a dispute over a cap was the cause of the attack.
The prosecution did not confirm this hypothesis.
Paris
Seine-Saint-Denis: Vital prognosis for a teenager after a bare-knuckle fight
Miscellaneous facts
Aya Nakamura and her companion placed in police custody for reciprocal violence against a spouse
Paris
Ile-de-France
Rosny-sous-bois
Assault
Police