Rescue teams have resumed their search for hundreds of people still missing after a dam collapsed in south-eastern Brazil on Friday, officials say.

Authorities paused the search for hours amid fears that a separate dam was at risk of giving way in the area.

About 3,000 people were then evacuated, local fire fighters told the BBC.

At least 37 people have been killed and more than 250 others are feared dead in Friday's disaster at an iron ore mine near the town of Brumadinho...