Updated: Sat, 08 Mar 2014 15:30:45 GMT | By Agence France-Presse

Three Americans on missing Malaysia Air jet: US

Three Americans were aboard a Malaysia Airlines jet that went missing off the coast of Vietnam, a US State Department spokeswoman confirmed Saturday.

"At this time, we can confirm that three US citizens were on board," State Department spokeswoman Jen Psaki said in a statement.

"Officials from the US embassies in Kuala Lumpur and Beijing are in contact with the individuals' families," Psaki said, adding that Washington is "working to assess whether additional US citizens may have been on board the flight".

"We extend our deepest condolences to the loved ones of those on board Malaysia Airlines Flight MH370," she continued, adding that the US government is providing no additional information about the Americans on the missing flight "out of respect for them."

Rescue planes on Saturday were searching for the missing Malaysia Airlines jet, which was carrying 239 passengers.

Officials in Vietnam have said two large oil slicks have been spotted, the first possible sign that the missing twin-engine Boeing 777 jetliner could have gone down somewhere in the waters between southern Vietnam and northern Malaysia.

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