A car bomb killed the chief of Lebanon's police intelligence department, Brigadier-General Wissam al-Hassan, in a Christian neighbourhood in the capital, Beirut, on October 19, 2012.
Here is a look at the other recent attacks in Lebanon, most of them against opponents of Syria.
February 14, 2005: Rafik al-Hariri, former prime minister, is assassinated in a massive bombing in Beirut. Bassel Fleihan, who served as economy minister in Hariri's government, also died in the blast. Anti-Syrian groups, then in the opposition, blame the Syrian and Lebanese governments, charges both deny.
June 2, 2005: Samir Kassir, anti-Syrian journalist and activist, is killed by a bomb placed under his car.
June 21, 2005: George Hawi, a former Communist Party leader and anti-Syrian politician, is killed by a bomb planted under his car.
July 12, 2005: Elias Murr, deputy prime minister and defence minister, survives a car bombing that targets his vehicle as he drives in north Beirut. Although pro-Syrian, Murr later says he was threatened by Syria's intelligence chief in Lebanon.
September 25, 2005: May Chidiac, prominent TV anchorwoman, of the leading anti-Syrian TV station LBC loses an arm and a leg from a bomb placed under her car.
December 12, 2005: Gibran Tueni, a prominent anti-Syrian newspaper editor and politician, is killed by a car bomb.
November 21, 2006: Pierre Gemayel, the industry minister and a prominent Christian politician, is shot dead by gunmen in a Beirut suburb.
June 13, 2007: Walid Eido, an anti-Syrian member of parliament, is killed along with his son, two bodyguards and six others in an explosion in Beirut.
September 19, 2007: Antoine Ghanem, a pro-government lawmaker from the Christian Phalange Party, is killed in a blast in the Christian suburb of Sin el-Fil, east of Beirut. Six others are also killed.
December 12, 2007: Brigadier-General Francois Hajj, the army's head of operations, and his driver are killed in a car bombing in the Christian suburb of Baabda on the way to work.
January 25, 2008: Car bomb kills Captain Wissam Eid, senior police intelligence officer, along with a bodyguard and at least four others in Hazmieh, a Christian neighbourhood on the edge of Beirut.