Three Myanmar men were charged on Wednesday with conspiring to murder a fellow national in Singapore with a gruesome collection of instruments including a chainsaw, a meat mincer, a cleaver and a chopping board.

Myanmar nationals Yae Wynnt Oaung, 32, Phyo Min Naing, 31, as well as Singapore permanent resident Zaw Min Hlaing, 37, were charged in a district court with plotting to murder another Singapore permanent resident, Aye Maung Maung Thet, 28.

Two construction workers were killed and dozens injured when part of a luxury hotel being built in Myanmar's second city of Mandalay collapsed, sparking a desperate 30 hour bid to free a man trapped in the rubble, police said Monday.

Rescue teams worked round-the-clock to free the trapped 18-year-old worker after the incident on Saturday afternoon at the construction site, according to local police, finally pulling him from the rubble late Sunday.

Malaysian authorities on Monday held a somber mass funeral for 21 suspected ethnic Rohingya found in human-trafficking graves last month, with fellow Muslims praying for the unidentified victims to find a place in heaven.

The remains were what police said were the first of 106 exhumed so far from pits at trafficking camps found in late May in jungles in northern Malaysia along the Thai border, a discovery that laid bare the brutal extent of the region's migrant crisis.

Myanmar opposition leader Aung San Suu Kyi called on her party Sunday to push for a landslide victory at crucial elections expected later this year as she celebrated her birthday with supporters.

The comments came after the Nobel Peace Prize winner -- who turned 70 on Friday -- cut a birthday cake alongside fellow National League for Democracy (NLD) luminaries during an official celebration at a restaurant famed for being a dissident meeting place.

Japan on Saturday offered a $3.5 million to help the Rohingya boat people who have fled Myanmar where they faced severe discrimination.

Foreign Minister Fumio Kishida said Japan remained committed to helping national reconciliation efforts on various fronts in Asia, including between Myanmar's government and "ethnic minority groups".

Indonesia's vice president warned Monday that paying people-smugglers would amount to "bribery" after Australia was accused of handing out money to turn back a boatload of asylum-seekers.

Allegations that the captain and five crew of a boat, carrying migrants from Bangladesh, Myanmar and Sri Lanka, were each paid US$5,000 by an Australian immigration official to turn back to Indonesia were made to police on Rote island in the country's east last week.

Myanmar opposition leader Aung San Suu Kyi wrapped up her first visit to China on Sunday, a trip that saw her meet the country's President Xi Jinping ahead of Myanmar elections in November.

Pictures of her trip posted online showed her meeting Xi and other Communist party officials, visiting the Great Wall of China and practicing calligraphy.

Prime Minister Tony Abbott said Friday Australia would do "whatever we need to do" to combat people-smuggling as he repeatedly refused to deny claims an official paid thousands of dollars to turn back a boat from Indonesia.

Indonesian authorities said they were investigating allegations told to local police that the captain and five crew of a boat carrying asylum-seekers were each paid US$5,000 by an Australian immigration official to return to the Southeast Asian nation.

Rebels who have fought Myanmar's army along a rugged border area with China for four months declared a unilateral ceasefire Thursday, after fighting left scores dead, threatened a nationwide peace pact and spilled over the frontier.

Fighting between government troops and ethnic Chinese rebel fighters has raged in the Kokang region of northern Shan state since early February, causing tens of thousands of people to flee their homes, many into China.

Myanmar's Aung San Suu Kyi met Chinese President Xi Jinping in Beijing on Thursday, state media said, during her closely watched first visit that China hopes will establish a line of communication with the influential opposition leader.

Suu Kyi met Xi at Beijing's Great Hall of the People, according to the official Xinhua News Agency, which did not immediately provide details on what was discussed.