Officials in Vietnam on Wednesday raised to 10 the official death toll for Tropical Storm Son-Tinh in this country, while four other people remain unaccounted for.

The Central Committee for Storm Vigilance and the Prevention and Control of Flooding said that flooding of homes and falling trees caused four of the deaths and injured at least 90 people.

Some 300 homes were completely destroyed and another 50,000 suffered damage, while some 91,000 hectares (about 228,000 acres) of rice paddies and other crops were obliterated, according to the committee, which on Tuesday estimated that the damage amounted to $95.2 million.

The most heavily affected province is Nam Dinh, followed by Thai Binh, Quang Ninh and Ninh Binh, all of them along the northern coast of the Gulf of Tonkin.

Authorities said that weather forecasts had indicated that the storm, which as it made landfall had wind gusts up to 133 kph (83 mph), would enter through the central region of the country.

But Son-Tinh changed course and moved into northeast Vietnam through provinces that had not prepared for a direct hit from the storm.

Before reaching Vietnam, the typhoon crossed The Philippines where it left at least 30 people dead and missing, as well as thousands of evacuees.

Every year, hundreds of people lose their lives in the downpours, tropical storms and typhoons of Southeast Asia's rainy season. EFE