The United States and China are both working with the Malaysian government in the search for the missing Malaysian airliner MH370, the U.S. State Department said on Wednesday.

The Malaysian government has the lead and is the coordinating body, said State Department spokeswoman Jen Psaki at a press briefing.

It has been 12 days since the plane disappeared en route from Kuala Lumpur to Beijing shortly after taking off on March 8. No trace of the plane has been found despite a multinational search effort.

The United States has put forward a number of resources toward the effort of finding the plane, said Psaki.

"I'm not going to go into more details about what information is being shared," she added.

U.S. President Barack Obama said on Wednesday that U.S. has put "every resource" available to help in the search efforts for the plane and considers it "a top priority."

It was Obama's first public comments on the event since the plane carrying 239 people went missing.