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The Coast Guard and Air Force have narrowed their massive search for a small plane carrying John F. Kennedy Jr., his wife Carolyn Bessette Kennedy, and his sister-in-law Lauren to an area off the coast of their intended destination, Martha's Vineyard, Mass.

The Coast Guard has confirmed that a suitcase belonging to one of the plane's passengers, a wheel, a headrest and part of a plane support known as a strut had washed up on the Vineyard beach popularly known as Gay Head. Officials would not say which passenger.

The plane was due to arrive at Martha's Vineyard around 10 p.m. Friday and was later expected to fly to Hyannisport, Mass., for the Saturday wedding of the late Robert F. Kennedy's daughter Rory, now postponed.

[CBS News will broadcast a one-hour special on the search for the Kennedy plane at 8 p.m. ET.]

Here are the highlights of this developing story:

• Thrust into the public eye with the echo of a gunshot in Dallas, John F. Kennedy Jr. grew up in the glare of publicity and the shadow of his father to become his own man.
• John F. Kennedy Jr. comes from one of America's most famous families, often likened to royalty. Although often in the limelight, the Kennedy family has been no stranger to tragedy.

  Well-schooled and beautiful, Carolyn Bessette became the bride of the man who many believed to be America's most eligible bachelor.

• John F. Kennedy Jr. never showed aspirations for political office. His career in recent years was publishing his magazine, George.
• The small plane John F. Kennedy Jr. was flying, the Piper Saratoga, is considered a reliable and forgiving aircraft, ideal for less experienced pilots.

  ©1999 CBS Worldwide Corp. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press and Reuters contributed to this report