NEW YORK, Sept 11 (AFP) - A string of coordinated terrorist attacks that struck in New York and Washington on Tuesday were the latest and most serious to target the United States.
Following is a list of bomb attacks carried out inside the United States in recent times:
Aug 24 1970: A researcher at the armed forces university in Madison (Wisconsin) is killed by a bomb planted by a pacifist group.
Jan 24 1975: An explosion in a New York bar leaves four people dead. It is one of a series of 49 bombings between 1974 and 1977 attributed to the Puerto Rican National Liberation Army.
Dec 29 1975: Eleven dead and 75 injured by a bomb planted in the left luggage department at New York's La Guardia airport.
May 16 1981: One dead in an explosion in the toilets at the Pan Am terminal at New York's JFK airport. The bombing is claimed by the Puerto Rican resistance Army.
Feb 26 1993: A bomb planted in an underground car park at the World Trade Center in New York leaves six dead and 1,000 injured.
Four Muslim fundamentalists, including a blind Egyptian cleric, are convicted of conspiracy and other charges related to the bombing, thought to have been ordered by Saudi terror master Osama bin Laden. In 1998, the so-called mastermind, Ramzi Ahmed Yousef, is convicted and sentenced to life plus 240 years in prison.
April 19 1995: A car bomb left outside a federal building in Oklahoma City kills 168 and injures more than 600 others.
Timothy McVeigh, 33, a member of an anarchist group hostile to the federal government, is convicted of the attack, the bloodiest ever carried out in the United States, in 1997 and is executed in June 2001.
Oct 9 1995: A train travelling between Miami and Los Angeles is derailed in Arizona after a bomb explosion claimed by a thitherto unknown group calling themselves "The Sons of the Gestapo". One dead and more than 80 injured.
Police believe the attack was linked to the police storming of a farmhouse in Waco, Texas, in 1993 in which 80 members of the Davidian sect were killed.
July 27 1996: A bomb explodes in Centenary Park in Atlanta, Georgia, during the Olympic Games, killing two people and injuring 110 others.
In May 1998, Therodore Kaczynski, acting under the soubriquet "Unabomber", is sentenced to life imprisonment for an 18-year campaign of parcel bombings as part of an "anti-modernist" crusade, which killed three people and injured 23 others.
Note: On September 16, 1920, a bomb explosion in the Wall Street financial district of New York killed 40 people and injured several hundred others. The blast is blamed by police on anarchists.