Soldiers and police from New Zealand and Australia arrived Saturday in Tonga to help restore order after riots killed at least eight people and ravaged most of the capital's business district, officials said.

Sixty troops and 10 police flew in from New Zealand to secure the Pacific island nation's only international airport after foreign airlines refused to use it due to a lack of security, said Tongan Defense Services spokesman Maj. Veehala, who like many Tongans uses a single name.

Another 50 troops and 35 police from Australia, including forensic experts to identify the bodies of those who died in fires during the riots, arrived later Saturday.

The troops will secure infrastructure including the airport, power stations, broadcasting systems and key government buildings.

Two more Chinese shops in Tonga were torched in attacks overnight, two days after rioting destroyed much of the capital, Nuku'alofa, but the city was "reasonably calm" on Saturday, Police Commander Sinilau Kolokihakaufisi told The Associated Press.

He said that no one was in the shops during the attacks Friday night, and that up to 200 ethnic Chinese — one-fifth the number living in Tonga — have sought refuge after about 30 Chinese-owned stores and businesses were torched during Thursday's riot.

Government spokesman Lopeti Senituli said about 20 young men were arrested overnight for breaking and entering premises in the city, much of which was a smoldering ruin after Thursday's riot.

Angry youths on Thursday had overturned cars, attacked officials and looted shops and offices before setting them ablaze in the tiny, impoverished kingdom.

Officials said about 80 percent of the capital was destroyed.

As in many South Pacific countries, ethnic Chinese traders have a large chunk of the economy in Tonga's capital, and are sometimes resented by locals who perceive them as outsiders despite many Chinese families being there for generations.

China's Ambassador to Tonga, Hu Yeshun, said that the embassy had "received over 150 people, whose houses or stores were destroyed by the mobs," and that his staff were still trying to contact all Chinese residents to make sure they were safe.

Kolokihakaufisi said the violence had displaced about 200 Chinese, many of them Tongan citizens, who are being accommodated at the Police College and a village outside the city.

"They're guarded by people in the village," he said.

The violence was triggered by anger that Parliament might finish this year's session without settling plans to introduce reforms that would give democratically elected lawmakers a parliamentary majority over royally appointed legislators.

The government had agreed Tuesday to a plan ensuring that 21 lawmakers in the 30-seat Parliament will be elected starting in 2008 — but it came too late to prevent the rioting.

Firefighters on Friday found eight charred bodies while searching burned-out shops, businesses and hotels. At least six of the victims were believed to be looters or rioters.

Kolokihakaufisi said that some people were still listed as missing, and not all damaged buildings had been checked, so more deaths could not be ruled out.

Senituli, a spokesman for Prime Minister Fred Sevele, said the foreign forces' arrival was "an acknowledgment our security apparatus is ... short of manpower."

Sevele on Friday invoked security laws to deploy the country's small army into the city.

Tonga's king said he was greatly distressed that a small but dangerous criminal element had caused deaths, injuries and property damage, and offered sympathy to victims' families those whose businesses were wrecked.

"Every measure of the law will be followed to track down and prosecute the perpetrators and those who incited and agitated this mindless criminal destruction," he said in a statement.

Tonga, halfway between Australia and Tahiti, has about 108,000 people. Its economy depends on pumpkin and vanilla exports, fishing, foreign aid and remittances from Tongans abroad.