The terrorists opened fire at restaurants in the eastern portion of Paris, where a lot of younger people gather.
A wall near where the shooting took place is gauged with bullet holes, all circled in white by investigators.
PHOTOS: Memorials set up at Paris terror attack sites
The shooters took aim at two restaurants - Le Carillon and Le Petite Cambodge right across the street. Tuesday afternoon, people, many in tears, crowded outside the restaurants, leaving flowers, photos and candles at the growing memorial for the victims.
Cal State Long Beach design student Nohemi Gonzalez with dining at Le Petite Cambodge with friends when the gunfire erupted. She was one of 12 people killed in the intersection.
MORE: Vigil held at Cal State Long Beach for student killed in Paris terror attacks
A total of 129 people were killed when three teams of attackers, including seven suicide bombers, attacked the national stadium, the Bataclan music hall and nightspots on Friday. In addition to those who were killed, the attacks also wounded 350 people, 99 of them seriously.
The Islamic State group has claimed responsibility for the attacks.
Paris resident Alex Arrabia said the latest attacks are different than the Charlie Hebdo shooting, because the terrorists are shooting random citizens.
MORE: Parisian compares latest attacks to Charlie Hebdo shooting