An explosion in a primary school in north-west Tanzania has killed at least six children.
The pupils were said to be playing with a grenade they had found.
A doctor in charge at Rulenge hospital, Sister Maria Goreth Fredricks, told the BBC that three died at the time they arrived at the hospital while the others were wounded.
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The school is in Kagera region near the border with Burundi.
The BBC reports that the region hosts refugees from neighbouring Burundi, some of them ex-soldiers.
There are fears that those ex-soldiers could have left their weapons in the area.
Meanwhile, a security team had been dispatched to the school in Kihinga village.