Former Lebanese premier returns to mark the 10th anniversary of his father's assassination

Workers set giant posters of slain former Lebanese Prime Minister Rafik Hariri in preparation to mark the 10th anniversary of his assassination, at his grave in downtown Beirut, Lebanon, Thursday, Feb. 12, 2015. The massive explosion that tore through his convoy on the Beirut seaside 10 years ago sent a tremor across the region and unleashed a popular uprising that briefly united the Lebanese and ejected Syrian troops from the country. But a decade later, and despite millions of dollars spent, justice remains elusive in a case that has been overshadowed by more recent turmoil. (AP Photo/Hussein Malla) (The Associated Press)

Workers prepare the new grave of slain former Lebanese Prime Minister Rafik Hariri in preparation to mark the 10th anniversary of his assassination, in downtown Beirut, Lebanon, Thursday, Feb. 12, 2015. The massive explosion that tore through his convoy on the Beirut seaside 10 years ago sent a tremor across the region and unleashed a popular uprising that briefly united the Lebanese and ejected Syrian troops from the country. But a decade later, and despite millions of dollars spent, justice remains elusive in a case that has been overshadowed by more recent turmoil. (AP Photo/Hussein Malla) (The Associated Press)

Former Lebanese Prime Minister Saad Hariri, center, escorted by his bodyguards, arrives to attend a ceremony to mark the tenth anniversary of the assassination of his father, former Prime Minister Rafik Hariri, in Beirut, Lebanon, Saturday, Feb. 14, 2015. Saad Hariri called on the militant Hezbollah group on Saturday to withdraw its forces from Syria saying their involvement in the civil war next door has backfired into Lebanon. (AP Photo/Hussein Malla) (The Associated Press)

Former Lebanese Prime Minister Saad Hariri has returned to Lebanon to mark the 10th anniversary of his father's assassination, a slaying that sharply divided Lebanon.

Rafik Hariri was killed with 21 others in massive truck bomb on a Beirut seaside road on Feb. 14, 2005.

Saturday's visit marks Saad Hariri's second return to Lebanon after four years in self-imposed exile. Hariri visited Lebanon briefly in August. He left Lebanon in January 2011 after his government was brought down by Hezbollah and its allies.

Hariri is scheduled to give a speech later Saturday at a ceremony making the assassination.

Hariri's father was Lebanon's most prominent Sunni politician. A United Nations-backed tribunal is trying in absentia five members of the militant Hezbollah group, the country's most powerful Shiite faction, for the bombing.