Martin Luther King Jr., a prominent American leader of the civil rights movement and Nobel Peace Prize winner, was shot and killed at the Lorraine Motel in Memphis, Tennessee, on April 4, 1968, at the age of 39. King was rushed to St. Joseph's Hospital, where he died at 7:05 that evening. He was a prominent leader of the Civil Rights Movement who was known for his use of nonviolence and civil disobedience.

James Earl Ray, a prisoner who ran away from the Missouri State Penitentiary, was arrested and charged with King's murder. He was sentenced to 99 years in the Tennessee State Penitentiary. He died in prison at the age of 70 due to liver failure.

The King family and others believe that a government conspiracy killed King, as Loyd Jowers said in 1993. They believe that Ray was a scapegoat. In 1999, the King family filed a wrongful death lawsuit against Jowers for $10,000,000. During the trial, both the King family and Jowers gave evidence accusing the government of a conspiracy. The government agencies that were accused could not defend themselves or respond, because they were not named as defendants. Based on the evidence, the jury concluded that Jowers and "others were part of a conspiracy to kill King."

Assassination
King had clearly made enemies in his rise to fame. The Ku Klux Klan did what they could to hurt his reputation, especially in the South. Even the FBI kept a close eye on him. 

On the evening of April 4, 1968, King was standing on the balcony of his motel room in Memphis, Tennessee. He was planning to lead a protest march to support garbage workers that were on strike. At 6:01 p.m., King was shot.  The bullet entered through his right cheek, and travelled down his neck.  It cut the major vein and arteries in his neck before stopping in his shoulder. Unconscious, he fell violently backwards onto the balcony.  

King was rushed to St. Joseph's Hospital.  His heart had stopped. Doctors cut open his chest and massaged his heart to try to keep blood and oxygen pumping through his body. However, King never became conscious again. He died at 7:05 p.m. According to Taylor Branch, King's autopsy showed that though he was only 39 years old, he had the heart of a 60-year-old man.

Afterward 

Civil disorder, including riots, happened after King's murder in at least 110 U.S. cities. Washington, Chicago, and Baltimore had the most damage.

On June 10, 1968, James Earl Ray was arrested in London at Heathrow Airport. Ray was extradited to the United States and charged with killing King. On March 10, 1969, Ray told the court he was guilty, and was sentenced to 99 years in the Tennessee state penitentiary. Ray later tried many times to take away his guilty plea and be tried by a jury, but he was unsuccessful.

The United States House of Representatives Select Committee on Assassinations was created in 1976 to look into the assassinations of John F. Kennedy and Martin Luther King, Jr., and the shooting of Governor George Wallace. The Committee investigated until 1978, and put out a final report in 1979. About the King assassination, the Committee decided:
 James Earl Ray did kill King, with one rifle shot
 "There is a likelihood" that this was the result of a conspiracy (probably between Ray and his brothers)
 The U.S. government was not part of this conspiracy
In 1999, Coretta Scott King, King's widow, and the rest of King's family won their wrongful death lawsuit against Loyd Jowers and "other unknown co-conspirators" (other people who were part of the conspiracy). Jowers claimed to have received $100,000 to arrange King's assassination. The jury of six whites and six blacks found Jowers liable for King's murder.  They also found that governmental agencies were part of the assassination plot.

James Earl Ray died in prison on April 23, 1998, at the age of 70.

In 2000, the Department of Justice completed the investigation about Jowers' claims. They did not find evidence to support the accusations about conspiracy. The investigation report recommends no more investigation unless some reliable new facts are presented.

The Lorraine Motel is now a civil rights museum.

References

Other websites
Department of Justice investigation on assassination
Shelby County Register of Deeds documents on the Assassination Investigation
Donald E. Wilkes, Jr. , Death of MLK Still a Mystery  (1987).
Donald E. Wilkes, Jr. , What are Facts of MLK Murder?  (1987).

1968 in the United States
1960s crimes in the United States
1960s in Tennessee
American civil rights
April events
Assassinations in the United States
History of Memphis, Tennessee
Assassination
Murder in the 1960s
Murders by firearm in the United States