Snow and ice blanket US north-west, leaving hundreds of thousands without power

• Travel disrupted in region and treacherous driving conditions
• Oregon governor Kate Brown declares state of emergency

Hundreds of thousands of people remained without power in the Pacific north-west after a winter storm blanketed the region with ice and snow and made travel treacherous.

The area around Portland, Oregon, was the hardest hit, with more than 200,000 people still without power on Sunday. Authorities said it could be a day or more before electricity was fully restored, and forecasters warned of more hazardous weather through Monday.