[Daily Trust] The ongoing battle between the Minister of Transportation, Rotimi Amaechi and the embattled Managing Director of the Nigerian Ports Authority (NPA), Hadiza Bala-Usman, which culminated in the suspension and probe of the latter over an alleged N162.32billion unremitted funds, is another round of the many conflicts between ministers and heads of agencies and parastatals under their supervision, Daily Trust on Sunday reports.AllAfrica News: Latest