Turkey has been plagued by terrorist attacks for years, with authorities blaming extremist political groups, Kurdish rebels and Islamic extremists. Here is a list of some of the attacks:

-- Nov. 20, 2003: Homicide bombers explode trucks laden with explosives at the British consulate and a London-based bank, killing more than two dozen people and wounding hundreds. The worst terror bombings in Turkey's history are blamed on Al Qaeda.

-- Nov. 15, 2003: Homicide bombers target two synagogues in Istanbul, killing 23 people. Turkish authorities are pursuing links to Al Qaeda.

-- Dec. 18, 2002: Necip Hablemitoglu, an Ankara University historian who researched Islamic groups, is shot and killed outside his home. Authorities suspect Islamic extremists.

-- Sept. 10, 2001: A homicide bomber sets off an explosive in front of a police station near Istanbul's main square, killing two policemen and an Australian bystander. A banned Marxist group, Revolutionary People's Liberation Party-Front, claims responsibility.

-- Oct. 21, 1999: Ahmet Taner Kislali, a prominent pro-secular Turkish professor and journalist, dies after a bomb explodes in his car. The Islamic Great Eastern Raiders-Front claims responsibility.

-- March 13, 1999: Attackers set fire to a crowded six-story department store in Istanbul, killing 13 people in one of Turkey's deadliest attacks in years. Authorities blame Kurdish rebels.

-- June 22, 1996: Four gunmen open fire and hurl hand grenades at patrons of an outdoor restaurant, killing six people and wounding 13 near the Kurdish-dominated southeastern city of Diyarbakir. Authorities link the attack to Kurdish rebels.

-- April 2, 1994: Bomb explodes in Istanbul bazaar, killing two people in third attack on popular tourist spot in two weeks. Previous attacks, which wounded eight people, were claimed by the Kurdistan Worker's Party, or PKK.

-- Jan. 24, 1993: Left-wing journalist Ugur Mumcu, outspoken critic of Islamic militancy, killed in bomb attack in Ankara. Three Islamic underground groups and Kurdish separatists claim responsibility.

-- March 7, 1992: Israeli diplomat killed and three people wounded in Istanbul car bombing -- the second attack against Jews in Turkey in a week. Islamic Jihad Organization and Islamic Revenge Organization claim attack.

-- March 1, 1992: Jewish man slightly injured when a hand grenade explodes in front of the Neve Shalom synagogue. Iranian-backed Shiite Muslim guerrilla group Hezbollah claims responsibility.

-- Oct. 19, 1991: Time bomb blows up at office of governing Motherland Party two days before general elections, killing two people. The underground leftist Dev Sol guerrilla group claims responsibility.

-- July 20, 1991: Five bombs explode in Istanbul ahead of arrival of former President George Bush. Dev Sol suspected.

-- March 16, 1991: Ten bombs damage offices with U.S. links, hours before arrival of Secretary of State James A Baker III. Dev Sol claims responsibility.

-- Feb. 9, 1991: Dev Sol assailants gun down American military employee working at Incirlik air base, used by U.S. warplanes attacking Iraq in Persian Gulf War.

-- February to October 1990: Four people -- two prominent columnists, a retired professor of religion and a Turkish jurist -- are killed in separate attacks over a nine-month period. Authorities suspect Islamic extremists.

-- Sept. 6, 1986: Suspected Palestinian terrorists fire machine guns and hurl bombs at worshippers in Istanbul's Neve Shalom synagogue during Sabbath prayers, killing 22 people, as well as themselves.

-- July 19, 1980 : Leftist gunmen kill former Premier Nihat Erim.

-- May 1, 1977: During a May Day gathering in Istanbul, unidentified gunmen open fire on tens of thousands of demonstrators, killing 37.