At least three people have died and several others are missing after Cyclone¹ Mick ripped through Fiji's main island of Viti Levu.

台风米克席卷斐济主岛维提岛，造成至少三人死亡、多人失踪。

The cyclone旋风，气旋 has cut power to much of the country, forced thousands into shelters, and caused severe flooding in the South Pacific nation, police say.

Mick, the region's first cyclone of the summer, is now causing gale-force winds over Fiji's Lau group of islands.

The category two cyclone is heading for Tonga汤加, which has been placed on alert.

Cyclone Mick was expected to have average winds of 80km/h (50mph) with gusts阵风 of up to 100km/h by Tuesday, the Fiji Meteorological Service said.

"There's a lot of damage," said Unicef spokesman Tim Sutton from the Fijian capital Suva.

"Lots of trees down, power lines down everywhere, all the roads around Viti Levu are still closed with flooding and landslides," he told New Zealand's National Radio.

Two people in Viti Levu were swept away in rivers, while a student died when a tree fell on him, police said.

Disaster management officials say the toll³ could rise when they make contact with small outer-lying islands.

Fiji, an archipelago群岛，列岛 of more than 320 islands, was hit by tropical storms in January, which killed at least 10 people and caused the country's worst flooding in recent history.