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Seven people were killed when flash floods hit as they were trekking through Kenya's Hell's Gate national park, authorities said Monday.

The victims, all Kenyan nationals, were part of a church youth group in a walking safari at the park located to the north-west of Nairobi.

“The seven people had gone missing just before dusk, when the group encountered sudden flash floods,” the Kenya Wildlife Service said in a statement.

Kenya's main rainy season between March and May often causes floods and massive displacement across the east African country.

At least eight people perished earlier this month in a Nairobi slum when their homes were destroyed by boulders after a night of heavy rainfall. – Sapa-AFP