The two victims are in serious condition but their lives are not in danger, according to the police spokesperson. Police previously said four people were injured in the attack.
One person has now been arrested near Place de la Bastille in Paris’ 11th arrondissement, but police said it was not yet clear if they were the alleged attacker.
The victims are employees of the French documentary production company First Lines, company founder Paul Moreira told BFM TV.
Moreira said that “it all happened very quickly” and that “there were a few hits to the two people in front of the office”. Moreira said the victims were attacked with a “kind of cleaver”.
The suspects are accused of providing logistical support to the perpetrators – brothers Said and Chérif Kouachi, and their accomplice Amedy Coulibaly – and face charges of participation in a terrorist criminal association.
A total of 17 people were killed in the 2015 attacks, which took place in the French capital for three days.
Twelve of them were murdered when the Kouachi brothers forced their way into the Charlie Hebdo building and opened fire during its editorial meeting on January 7.
Among the victims were the magazine’s editor, Stéphane “Charb” Charbonnier, several cartoonists and columnists, and a protection officer tasked with protecting Charb, who had been the target of threats for the magazine’s publication in 2006 of cartoons depicting the Prophet Muhammad.
The next day, January 8, policewoman Clarissa Jean-Philippe was shot dead by Coulibaly in the southern suburbs of Paris in Montrouge.
On January 9, Coulibaly took several people hostage in a kosher supermarket in the eastern suburbs of Paris at Porte de Vincennes. Four hostages were killed. Coulibaly was killed by police when they entered to end the siege and save 15 other hostages.
The Kouachi brothers were shot dead by police in a separate operation in Dammartin-en-Goele, northeast of Paris, on the same day.
To mark the start of the trial earlier this month, Charlie Hebdo reposted the controversial cartoons depicting the Prophet Muhammad, as well as a tribute to employees who lost their lives in 2015.
In a statement, the magazine described the cartoons as “part of history, and you can’t rewrite history, or erase it.”
Gaëlle Fournier in Paris and Niamh Kennedy in London contributed to this report.