Crowds chanting slogans against Syria have turned out in Beirut for the funeral of anti-Syrian journalist and MP Gibran Tueni, killed by a car bomb.
Mourners marched to the Greek Orthodox Church of Saint George in the Lebanese capital, where there were emotional scenes at the funeral service.
Some in the crowds of tens of thousands denounced Syria, accused of killing Mr Tueni, and the pro-Syrian president.
Damascus has denied any involvement in the murder on Monday.
The killing was the latest in Lebanon of a high-profile opponent of Syria, following the assassination of former Prime Minister Rafik Hariri in February.
The United Nations Security Council has been considering a plan to widen the UN investigation into Mr Hariri's death.
The chief UN investigator, Detlev Mehlis, told the Council on Tuesday that his findings so far had reinforced his earlier conclusions that Syrian and Lebanese intelligence were involved in the attack on Mr Hariri.
Damascus has strongly denied any involvement in the Hariri killing, which led to a wave of protests and the withdrawal of Syrian troops from the country after nearly three decades of occupation.
At the funeral of Mr Tueni, his father Ghassan appealed for calm.
"I call on this occasion not for revenge or hatred but for us to bury with Gibran all our hatreds and to call on all Lebanese, Muslims and Christians, to unite in the service of great Lebanon and its Arab cause," he said.
Crowds had followed the coffin of Mr Tueni through the streets.
In scenes reminiscent of the funeral of Mr Hariri, central Beirut was transformed into a sea of mourners carrying Lebanese flags and portraits of Mr Tueni.
In a traditional sign of grief, the pall bearers rocked the coffin as it made its way through Gibran Tueni Square, named after Mr Tueni's grandfather, who founded an-Nahar newspaper in 1933.
"[President Emile] Lahoud, shame on you. Resign," the crowd chanted, as well as "Our president is under the Syrian boot".
Men pushed as they reached out to touch Mr Tueni's casket, and those of his driver and bodyguard, also killed in the bombing.
"Everyone who takes to the street is saying 'enough killing', said Ghenwa Jalloul, a colleague of Mr Tueni.
Meanwhile in a special session of parliament, deputies observed a minute's silence before paying tribute to the murdered editor-in-chief.
"The glory is yours," said Speaker Nabih Berri.
The leader of the Hezbollah bloc, Mohammed Raad, said Mr Tueni was a man of "courageous word and uncompromising position".
A general strike called by anti-Syrian groups is under way in Beirut and other parts of the country.
Mr Tueni, 48, had returned from France only a day before he was assassinated, having spent time there since August after receiving death threats.
Monday's attack was the 13th bombing in Lebanon since Mr Hariri's assassination.