At least 13 pupils have been killed in a stampede at a primary school in western Kenya, local media report.
The stampede broke out at Kakamega Primary School, north-west of the capital Nairobi, on Monday afternoon.
Reports say children were leaving classes for home at about 17:00 local time (14:00 GMT) when the stampede happened.
Kakamega police commander David Kabena confirmed at least 13 deaths to local media.
Nearly 40 other students were injured and taken to hospital, reports say. Some of them were released after receiving treatment.
The cause of the stampede is not yet clear, but Mr Kabena said an investigation had been launched.
Some reports said the students had rushed down a narrow staircase at the end of the school day. The staircase is said to have collapsed.
The Daily Nation newspaper said some of the children fell from the third-floor of the building as they ran.
Videos posted to social media showed crowds of people gathered outside a hospital where children were being treated.
Kenya’s education ministry offered condolences to the families and friends of those who had died.
Correspondents say the incident may raise questions about the safety of children in Kenya’s schools.
Raila Odinga, Kenya’s former prime minister and current leader of the opposition, called for a swift investigation to “get to the bottom of this incident”.
In September last year eight pupils died and 69 were injured when a classroom collapsed at a primary school in Nairobi.
Several days later, Kenya’s education ministry closed St Catherine’s Children Education Centre Bombolulu, near Nairobi, due to safety concerns.
“This is just a start and we are going to crack down on all schools in the country with poor structures,” education secretary George Magoha said at the time.