PARIS: Exiled Lebanese political leader Michel Aoun accused Syria of responsibility for the death of former Lebanese prime minister Rafiq Hariri.
"They are responsible. It's they who control the security and intelligence services" in Beirut, he said and added there were "many indications" to back up his assertion.
Lebanese opposition figures blamed Syrian and Lebanese authorities for the death of Hariri.
In a statement after an emergency meeting, opposition figures also called for Syrian forces to pull out before elections in May, as well as a three-day strike.
Syrian President Bashar Al Assad condemned the attack as a "terrible criminal act".
"The Syrian government and people stand alongside brotherly Lebanon in this dangerous situation and convey our sincerest condolences to the family of Mr Hariri and the families of the other victims."