The U.S. joined the growing international effort to locate missing AirAsia flight QZ8501 as search operations entered their third day on Tuesday.
The USS Sampson, a destroyer, is scheduled to reach the search area in the Java Sea later on Tuesday, according to the U.S. Navy, helping to broaden the scope of the search.
Also, China late Monday said it would dispatch a naval ship and air force jet alongside Singapore, Malaysia and Australia, which have already deployed assets to assist in the Indonesia-led search involving some 30 ships and 15 aircraft.
With more ships and planes, the search area will also be expanded to include islands in the area as well as land on Indonesia's side of Borneo, Reuters reported.
Oil test results awaited
Monday's search efforts yielded some conflicting leads reminiscent of the aftermath of MH370's disappearance, which saw several false leads.
An Indonesian helicopter reported two oil slicks within the search area and an Australian surveillance aircraft spotted objects elsewhere in the Java Sea.