Kassir denied the allegation and said repeatedly that his life is now in danger because of it.
I love the idea of the Salfi sending a hit man to silence this guy, especially if the hitter dies resisting arrest right after the deed is done! No doubt al-Masri has already justified it by explaining that Kassir will be martyred for the cause. Even if Kassir decides to take the carrot now, the stick is likely to catch up to him in prison :)