France on high security alert after school shooting The scene of shooting accident is seen in Toulouse, France, on March 19, 2012. Three c...

France on high security alert after school shooting

The scene of shooting accident is seen in Toulouse, France, on March 19, 2012. Three children and an adult were killed in a shooting outside a Jewish school in the southwestern French city of Toulouse on Monday morning, local media reported, raising the toll up from three. (Xinhua)

Police block the street at scene of shooting accident in Toulouse, France, on March 19, 2012. Three children and an adult were killed in a shooting outside a Jewish school in the southwestern French city of Toulouse on Monday morning, local media reported, raising the toll up from three. (Xinhua)

TOULOUSE, France, March 19 (Xinhua) -- A gunman killed four outside a Jewish school in the southwestern French city of Toulouse on Monday morning, prompting President Nicolas Sarkozy to put the region on its highest terror alert and drawing wide condemnation.

Calling the shooting a "national tragedy," Sarkozy, who rushed to the southwestern French city at noon, pledged to do everything to find the gunman.

"We have no choice but to face the challenges, resist," he said.

The shooting took place outside the Ozar Hatorah Jewish school at around 8:00 a.m. local time (0700 GMT), just as students were arriving for school.

A professor, his two sons, and another 10-year-old student was killed before the killer fled on a motorbike.

Over 100 investigators were working on a manhunt for the gunman and had already identified the license plate of the motor bike used in the attack, media reported.

The attacker used a second gun when the first jammed, the Toulouse prosecutor said.

The incident follows the killing of three soldiers in two similar shootings last week in Toulouse on March 11 and in nearby Montauban on Thursday.

In a press statement released by the Elysee, Sarkozy confirmed that it was the same person with the same weapon "killed soldiers, children and the teacher."

The president announced a minute of silence in all schools throughout the country on Tuesday.

Sarkozy, who is running for a second term, announced to suspend his election campaign at least until Wednesday. Other main contenders including Socialist frontrunner in the presidential race, Francois Hollande, also said to cancel his campaign events after heading to the scene in the afternoon in Toulous.

French Interior Minister Claude Gueant had ordered "to strengthen surveillance" around Jewish schools in France, local media reported.

Shortly after the attack, the White House offered condolences and denounced the "unprovoked and outrageous" shooting.

"We were deeply saddened to learn of the horrific attack this morning against the teachers and students of a Jewish school in the French city of Toulouse," National Security Council spokesman Tommy Vietor said in a statement.

"We join the government of France in condemning this unprovoked and outrageous act of violence in the strongest possible terms," he said.

The Israeli embassy in Paris said the bodies of all four victims would be flown to Israel for burial at the request of their families.

Israeli Prime Minister Benjamin Netanyahu on Monday called the lethal shooting attack a "savage crime" that "gunned down Jews, among them children."

"I think that we can't rule out that there was a strong, murderous anti-Semitic motive here," Netanyahu told members of his Likud party, according to a statement sent to Xinhua.

The prime minister said Israel will "do everything" to assist in the investigation.

In neighboring Belgium, Prime Minister Elio Di Rupo said the attack was a shameful act targeted at schools and ethnic groups. His government announced it would ramp up security at Jewish schools across the country.