**EDITORS PLEASE NOTE: EDIT CONTAINS GRAPHIC IMAGES**<br/> <br />The leader of the U.N.-OPCW Mission in Syria says the U.N may send a fact finding mission to Syria over chlorine gas allegations.<br/> <br />(SOUNDBITE) (English) LEADER OF UN-OPCW MISSION IN SYRIA, SIGRID KAAG, SAYING:<br/> <br />"When it comes to the allegations of use of chlorine gas in recent events and over the recent months, this is a matter under discussion in The Hague directly by OPCW with the Syrian authorities; there is a discussion on a possible fact finding mission and this is where matters are now."<br/> <br />Amateur video Reuters cannot independently verify said to be shot on April 11 purports to show a chlorine gas attack in the Hama province of Syria.<br/> <br />Government forces and rebel groups have exchanged blame for the attack.<br/> <br />More and more of these videos have been appearing recently.<br/> <br />Activist video said to be filmed on April 21 purports to show a separate toxic chemical attack in Idlib province, in which some
