At least 14 students have been killed and 39 wounded in a stampede at a primary school in western Kenya.

The stampede occurred at approximately 5:00 pm (14:00 GMT) when panic broke out as the students went home for the day from Kakamega Primary school. The reason for the panic was not immediately unclear.

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Speaking to journalists in Kakamega town, police chief David Kabena said an investigation was under way "to establish what exactly happened".

Kenya Red Cross said on Twitter that emergency services were responding to a "fatal stampede" at the school.

"My heartfelt condolences to parents that have lost loved ones in the unfortunate and regrettable tragedy at Kakamega Primary School. I wish a quick recovery to the injured children and pray that God grant strength to the affected families," former Prime Minister Raila Odinga said on Twitter.