The Syrian parliament responded the next day by voting to bring treason charges against him, and the Baath Party expelled him. Following the Khaddam interview, the UN Commission headed by Detlev Mehlis investigating the Hariri murder said it had asked the Syrian authorities to question Bashar Assad and Syria's Foreign Minister Farouk al-Sharaa. He met with the UN investigators searching for the Hariri assassination in Paris in January 2006. His accusations against Assad and his inner circle regarding the Hariri assassination also grew more explicit: Khaddam said he believed that Assad ordered Hariri's assassination.