The death toll from landslides in Japan could rise significantly with 52 people still missing.
At least 39 people have been confirmed dead following the disaster on the outskirts of Hiroshima on Wednesday.
Rescue workers were forced to abandon search efforts overnight amid fears further landslides could occur due to the ongoing heavy rain.
Among those killed was a rescue worker who died as he attempted to carry a small child to safety.
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The talks descended into crisis on Friday when Canada's trade minister Chrystia Freeland walked out of meetings.
Police in New York are still investigating what the substance is and whether it could be harmful.
The Sherlock actor made the comment while he received an award for his humanitarian work.