CHRONOLOGY: Attacks blamed on Sri Lanka's Tamil Tigers

(Reuters) - Suspected Tamil Tigers bombed a bus in central Sri Lanka on Wednesday killing 24 people, the military said, as a 6-year ceasefire between the state and rebels formally ended.

Here is a chronology of major attacks blamed on the Liberation Tigers of Tamil Eelam (LTTE), fighting for an independent state since 1983:

April 1987 - Car bomb explodes at Colombo central bus station, killing 113 people and wounding scores.

April 1989 - Car bomb explodes in the eastern port of Trincomalee, killing 51 people shopping for traditional new year.

March 1991: Defence Minister Ranjan Wijeratne is among 19 killed when a car bomb is detonated in Colombo.

May 1991 - Former Indian prime minister Rajiv Gandhi is killed in southern India by a suspected LTTE suicide bomber.

August 1992 - The army chief, Lieutenant-General Denzil Kobbekaduwa, is killed in a landmine blast in Kayts, in northern Sri Lanka.

November 1992 - Navy chief Clancey Fernando is killed in a suicide bombing in Colombo.

May 1993 - President Ranasinghe Premadasa and 23 others are killed by a suicide bomber in Colombo.

October 1994 - Presidential candidate Gamini Dissanayake is one of 52 killed in a bomb blast at a Colombo election rally.

January 1996 - A truck filled with explosives rams into the Central Bank building in Colombo, killing up to 100 people and wounding 1,400.

July 1996 - Two bomb blasts on a rush-hour commuter train kill 57 people and wound more than 250.

December 1999 - President Chandrika Kumaratunga is wounded in an attempted assassination by a suicide bomber; at least 34 are killed in two explosions. She lost an eye.

June 2000 - Industrial Development Minister C.V. Gunaratne and 21 others are killed in a suicide bomb blast in Colombo.

July 2001 - An attack on the country's main air base and only international airport kills at least 12 people and destroys 13 aircraft.

August 2005 - Foreign Minister Lakshman Kadirgamar is shot dead at his home in Colombo.