Rescue efforts are underway in Brazil's Rio Grande do Sul state after floods and landslides killed at least 100 people.

More than 160,000 people have been displaced by the floods, with some municipalities completely destroyed by floodwater.

Pictures emerged on Wednesday of a horse stranded on a rooftop amidst the floodwater in the city of Canoas. The city's mayor told GloboNews that they were hoping to rescue the horse with the help of a helicopter.

The international airport in the state's capital, Porto Alegre, has had its runways completely flooded and will be out of use for at least 30 days. Football stadium Arena do Grêmio has also been affected by the floods.

A message of solidarity was projected onto the Christ the Redeemer statue in Rio de Janeiro on Wednesday evening.

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