Investigators are trying to learn all they can about two passengers who boarded a missing Malaysian jetliner with stolen passports. 

 

Thai police and Interpol are questioning the proprietors of a travel agency in a Thai resort town that sold the men one-way tickets. 

 

Malaysia's police chief was quoted by local media as saying that one of the men has been identified, but Malaysia's civil aviation chief isn't confirming that. 

 

The use of stolen passports has fueled speculation that terrorists may have brought down the Boeing 777, which vanished with 239 people aboard.

The police agency says it has a database of 40 million stolen or lost travel documents -- but that last year, more than a billion times, travelers boarded planes without their passports being checked against the database.

Meanwhile, another possible clue to the disappearance of a Malaysian jetliner has turned out to be unconnected to the plane.

 

Malaysian maritime officials had found some oil slicks in the South China Sea, and they sent a sample to a lab to see if the oil came from the missing plane. They say tests showed that the oil was not from an aircraft.

 

Earlier, searchers investigated a yellow object that looked like a life raft. It turned out to be trash covered with moss that was floating in the ocean. 

 

The plane was on a flight to Beijing when it disappeared over the weekend with 239 people on board.

 

A company official says a woman based in western Pennsylvania was among the 239 people aboard a Malaysia Airlines jet that disappeared en route to Beijing over the weekend.

 

Eastman Chemical Co. says Mei Ling Chng of South Park was on the Boeing 777 that vanished from radar between Malaysia and Vietnam. The Malaysian woman was a senior process engineer for Eastman subsidiary Flexsys America in Monongahela, near Pittsburgh.

 

Eastman Chemical spokeswoman Tracy Kilgore told reporters in an email that officials "are deeply shocked and saddened."

 

She said Chng had transferred to Monongahela in 2010.

 

Kilgore said Chng was "remembered fondly by her co-workers as being ... pleasant and happy as well as well-respected."

 

Flexsys makes and supplies chemicals for the rubber industry.  (AP)