Hanoi - Heavy rains triggered by the tropical storm Kammuri killed at least 62 people and left 39 others missing in northern Vietnam, officials said Saturday.

Flash floods and landslides wreaked havoc on the northern Vietnamese provinces of Lao Cai, Yen Bai, Quang Ninh and Phu Tho after the storm made landfall from the Gulf of Tonkin Friday.

Flash floods killed 25 people, injured six and left 35 others missing in Lao Cai province since Friday, according to Thao A Tua, an official with the province's flood and storm department. Heavy rains destroyed nearly 800 houses in the province.

"It is still raining heavily and we fear that the number of people killed will continue to grow," Tua said. "The water level of the Red River is also rising rapidly."

In neighboring Yen Bai province, flash floods killed 25 people, injured four others and left four people missing, according to the head of the province's flood and storm department, Tran Anh Van.

Van said the rains subsided in the province but the death toll will likely rise as his department receives more reports from remote districts hit by floods and landslides Friday night.

Seven construction workers were killed and another broke his leg when a landslide buried their tent near Ha Long City early Saturday, said Pham Dinh Hoa, a disaster official in Quang Ninh province.

Hoa said the landslide also killed a mother and injured her son while they were sleeping at home.

"When they heard the noise, both ran for the door, but the mother was not quick enough to escape being buried," Hoa said. "Her son was lucky to escape with minor scratches, but he lost his mother."

The latest floods and landslides raised the total number of people killed by natural calamities in Vietnam this year to at least 90.

More than 300 people were killed by floods and storms in Vietnam last year, including 89 killed by Typhoon Lekima and the floods it triggered.

Experts from the National Hydrometeorology Forecast Center predict Vietnam will face more dangerous storms this year due to the La Nina climatological phenomenon. (dpa)