WASHINGTON - The Pentagon is weighing a request from Malaysia for sonar equipment to bolster the so-far frustrated search for Malaysia Airlines Flight MH370, as concerns grow that any debris may have sunk to the bottom of the sea.
's Defense Minister Hishammuddin Hussein
asked for undersea surveillance equipment in a phone call with US Defense Secretary Chuck Hagel
, as the Pentagon
tallied $2.5 million in costs so far in the nearly two-week-old search.