airplane crash

Authorities are investigating the cause of an airplane crash in Okmulgee County that killed the only person on board.Officials say the body of the plane's…

Angus Houston, the coordinator of the search off Australia's west coast, says he's "now optimistic" that the aircraft, or what's left of it, will be found.

Calling it the "most promising lead" so far, the leader of the search for a missing Malaysia Airlines jetliner says ships have again detected a signal used by "black box" beacons.

With no firm data on how fast the plane was flying and how far it actually went, the operation to find it is "the most challenging ever," retired Australian Air Chief Marshal Angus Houston cautions.

The Malaysia Airlines jet vanished nearly three weeks ago, and weather is hindering the search. A new satellite image shows some 300 objects in the Indian Ocean. But no jet debris has been recovered.

The focus remains on an area of the Indian Ocean southwest of Perth, Australia. Teams are looking for objects seen floating in the ocean there in images taken by a satellite last weekend.

Satellite images of what might be debris from the jet are the first "credible lead" in the hunt for Malaysia Airlines Flight 370, an official says. Follow the news as it comes in.

A source familiar with the investigation says a satellite system was getting pings from the plane long after its last reported contact with controllers. The jet and 239 people disappeared a week ago.

The jet with 239 people on board disappeared early Saturday on a flight to Beijing. So far, a search in the sea between Malaysia and Vietnam hasn't turned up any definitive sign.