Next phase of search operations set to begin , with underwater sonar drogues to be deployed . Search follows intensive sonar mapping of a huge area of seabed in the southern Indian Ocean . Comment: Even after an intensive search , nothing was found .
Next phase of search operations set to begin , with underwater sonar drogues to be deployed . Search follows intensive sonar mapping of a huge area of seabed in the southern Indian Ocean . MH370 disappeared without a trace over six months ago . Even after an intensive search , nothing was found .