Kuala Lumpur, Malaysia (CNN) -- New hope, more frustration. As the search for Malaysia Airlines Flight 370 turned up fresh potential clues, dozens of anguished Chinese relatives on Sunday demanded that Malaysia provide them with evidence on the fate of their loved ones aboard the missing Boeing 777. Ideal weather conditions gave one Australian aircraft crew the opportunity to detect many objects in the water west of Perth. It spotted four orange items of interest, took photos and sent the coordinates, but Flight Lt. Russell Adams said the crew couldn't determine whether the objects were from the airliner, which officials believe went down in the southern Indian Ocean.
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NEW: Australian Prime Minister: "If this mystery is solvable, we will solve it"
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Search for plane resumes; 10 aircraft and 10 boats involved
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No confirmed plane debris sightings, though four interesting orange objects are seen
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Australian crew calls new objects one of their "most promising leads"
Ten aircraft were set to fly over the search area about 1,150 miles (1,850 kilometers) west of @placeholder, Australian officials said.
Ten aircraft were set to fly over the search area about 1,150 miles (1,850 kilometers) west of Perth, @placeholder officials said.