UPDATE: Crews Continue Searching For Malaysia Airline Black Box

It's now the fourth week of searching of the missing Malaysia Airlines Flight 370 jet.

An Australian ship is using an American black box locator to try and track down the wreckage in the Indian Ocean.

20 planes and ships are also helping with the search.

They are looking at a 1,200 mile area where investigators believed the Boeing 777 went down.

Malaysia's Acting Transport Minister says crews will not stop searching for those on board.

A US Navy spokesman says the search area is so massive, it could take years to find the missing jet.  

Some Chinese families are accusing the Malaysian government of concealing information.