Dec. 21, 1988 - All 259 Christmas travelers aboard a Pan Am jumbo jet bound for New York are killed when it explodes and crashes into Lockerbie, a Scottish village. 11 people on the ground die.

Dec. 28, 1988 - Military explosives experts announce a bomb made of plastic explosives blew up Flight 103.

Dec. 14, 1990 - A newspaper reports that a detonator fragment from the bomb that brought down Pan Am Flight 103 links Libya to the 1988 attack.

Feb. 18, 1992 - American and Scottish authorities charge Abdel Basset Ali al-Megrahi and Lamen Khalifa Fhimah with planting the bomb that blew up Flight 103; Libya refuses to hand them over for trial.

Oct. 6, 1993 - Two Libyans accused in the bombing of Pan Am Flight 103 agree to be tried in a foreign country.

July 21, 1998 - Local relatives of victims feel betrayed after learning that the U.S. and Britain are considering trying the two accused Libyan bombers under Scottish law in the Netherlands.

May 3, 2000 - Lockerbie trial begins, 12 years after the bombing. Lawyers strike a deal several days later, eliminating months of testimony.

Jan. 31, 2001 - A Scottish three-judge court convicts Abdel Basset Ali al-Megrahi, 48, sentencing him to a minimum of 27 years in a Scottish prison before being eligible for parole. The second suspect is acquitted.

Aug. 20, 2009 - Abdel Baset al-Megrahi, suffering from advanced prostate cancer, is released from a Scottish prison after serving eight years of a life sentence.

Compiled by Press librarian Martha Zechman. Includes information by the Associated Press.