Search crews in the Indian Ocean have failed to pick up more of the faint underwater sounds that may have been from the missing Malaysian jetliner’s black boxes.

Search crews hunting for the missing Malaysia Airlines jet have failed to relocate faint sounds heard deep below the Indian Ocean said to have been consistent with a plane’s black boxes.

The search for the missing Malaysia Airlines Flight MH370 could take years, according to US Naval Officer Captain Mark Matthews who is part of the search team on the Indian Ocean.