Kenzo Tribouillard / AFP - Getty Images
People march through the streets of Paris on March 19 after the today's shooting of the Ozar Hatorah Jewish School in the southwestern city of Toulouse. Three children and a teacher were killed and a teenage boy was seriously wounded when a gunman opened fire this morning.
Thomas Coex / AFP - Getty Images
People march through the streets of Paris on March 19 after the Ozar Hatorah Hebrew school shooting, where four people lost their lives.
Eric Cabanis / AFP - Getty Images
Earlier today: Policemen work the scene near the Ozar Hatorah Hebrew school where four people were killed by a gunman.
Thousands of Parisians held a silent march through the streets of Paris to honor the three children and a rabbi who were shot dead by a gunman at Ozar Hatorah Hebrew school in Toulouse, France today.
President Nicolas Sarkozy said the bullets from one of the two guns used match those in earlier attacks that killed three French soldiers.
Some 120 investigators were working on a manhunt for the killer and had already identified the license plate of the motorbike used in today's attack, police sources said.
French media said that security was being tightened at all Jewish schools in the country.
--Msnbc.com sources contributed to this blog post.