Hundreds of thousands of mourners jammed central Beirut on Wednesday to pay last respects to slain former Lebanese prime minister Rafik Hariri.
Mr. Hariri was laid to rest at a Beirut mosque two days after a car bomb attack that killed him and at least 14 others.
The late prime minister's funeral turned into an outpouring of grief and anger, with many mourners chanting anti-Syrian slogans.
Lebanese opposition politicians have blamed the bombing on Syria, the main power broker in Lebanon. Damascus insists it had no role in the murder.
Lebanese judicial sources say the government will ask Swiss experts to help with the bombing investigation.
Meanwhile, U.S. Assistant Secretary of State William Burns has called for the "complete and immediate withdrawal" of Syria's 14,000 troops from Lebanon.
French President Jacques Chirac, a close friend of Mr. Hariri, flew into Beirut after the funeral to express his condolences to the family.