Flowers outside the Jewish museum in Belgium a day after three people were shot dead.<br/> <br />The head of one Jewish organization says more must be done.<br/> <br />(SOUNDBITE) (French) PRESIDENT OF THE COORDINATING COMMITTEE OF BELGIAN JEWISH ORGANIZATIONS, MAURICE SOSNOWSKI, SAYING:<br/> <br />"If the 'wake-up call' we got yesterday is not enough to raise awareness among politicians and show the extreme and absolute urgency to fight anti-semitism, I believe in that case I think that cause will be definitely lost."<br/> <br />Belgian police released surveillance video Sunday as they hunted for an assailant who shot and killed two women and one man.<br/> <br />The spokesperson of the Brussels prosecutor's office said a French woman and an Israeli couple were killed.<br/> <br />Now they are seeking help to find the shooter.<br/> <br />(SOUNDBITE) (French) INE VAN WYMERSCH, SPOKESPERSON OF BRUSSELS PROSECUTOR'S OFFICE, SAYING:<br/> <br />"From those camera images we have learned that the attacker was most likely alone, that
