PERTH, Australia (AP) — A Malaysian official met Sunday with relatives of passengers who were aboard the missing jetliner and discussed ways of providing them with financial assistance, as an unmanned submarine continued to search for any signs of Malaysia Airlines Flight 370. Two-thirds of the missing plane's 227 passengers were Chinese, and many of their family members have been angered by Malaysia's handling of the investigation, with some accusing the government of lying, incompetence or participating in an outright cover-up. The yellow device has already covered about half of its focused search area, but has yet to uncover any clues that could shed light on the mysterious disappearance of the plane more than six weeks ago. On Saturday, Malaysian Defense Minister Hishammuddin Hussein stressed the importance of the weekend submarine missions in the southern Indian Ocean, but stressed that even if no debris is recovered, the scope of the search may be broadened or other assets may be used. Radar and satellite data show the jet mysteriously veered far off course for unknown reasons and would have run out of fuel in the remote section of the southern Indian Ocean where the search has been focused.