A powerful typhoon has slammed into the north-eastern Philippines, killing six people and leaving parts of the country underwater.

The strongest typhoon to hit the country this year slammed into the coast in Quezon province before nightfall on Sunday (local time).

Thousands of people have been evacuated from coastal areas on Luzon, the Philippines's largest and most populous island

Authorities say communication lines are severed and the power is out in some communities

The government suspended school and work for Monday, while flights and ferry services were cancelled

Five of the dead were rescuers workers, who were using a boat to help residents trapped in floodwaters when a wall collapsed, drowning them in the rampaging waters, Governor Daniel Fernando of Bulacan province, north of Manila, said.

Elsewhere an elderly man died after he was hit by a landslide in Burdeos municipality on the Polillo islands, part of Quezon province, where the storm made landfall, said Garner Jimenez from the local civil defence office.

More than 17,000 people were moved to emergency shelters from high-risk communities prone to tidal surges, flooding and landslides in Quezon alone, officials said.