Australian rescuers stepped up the search for missing Malaysian Flight MH370 as frustration at two weeks of fruitless efforts boiled over Saturday in Beijing with police having to restrain angry relatives of the passengers.
Six planes, including four Orion anti-submarine aircraft packed with state-of-the-art surveillance equipment, joined the search for debris from the aircraft over a remote stretch of the Indian Ocean, 2,500 kilometres (1,500 miles) southwest of Perth.
Chinese, British and Australian naval ships were all steaming to the same area where two floating objects -- possibly plane wreckage -- were picked out on grainy satellite pictures.
With planes from China and Japan also expected to join the hunt, the sudden concentration of resources on the basis of such inconclusive evidence reflects growing desperation after 14 days of piecemeal progress.
There have been no sightings of interest since Thursday, when Australia released the satellite photos taken on March 16.
Two-thirds of the 227 passengers on board were Chinese and growing anger among their family members over Malaysia's handling of the crisis exploded Saturday during a meeting with Malaysian officials at a Beijing hotel.
Police were forced to intervene as relatives rushed towards the officials, demanding answers which they accuse the Malaysians of withholding.
"Government of Malaysia, tell us the truth! Give us back our loved ones!" they shouted.
After the police stepped in, the Malaysian officials left the room.
"We can't bear it any longer," one of the relatives said later. "They're offering us compensation, but we've lost our entire families.