UPDATE: 4/5 @ 10:40am
Further reports say that the frequency of the pings that have been found by the Chinese ship are consistent with the frequency used by the airplane's black box.
Still NO confirmation from the Task Force office.
Various news organizations are reporting this morning that a Chinese ship on routine patrol searching for the missing Malaysian Air 777 may have found the black box.
Emphasis on the word "may". There has been no confirmation of the find, but two other search and rescue ships are in the area using underwater detection equipment in the search.
Here is the latest tweet from the NY Times on what's known.
Chinese Report Ship Searching for Missing Jet Detects Underwater Ping http://t.co/Ftk35MPSFM— The New York Times (@nytimes) April 5, 2014