At least six children have been killed and 25 others injured in an explosion at a primary school in north-west Tanzania, witnesses say.
Reports say the pupils were playing with a grenade they had found.
Three were pronounced dead at the time they arrived at the hospital. The others succumbed to their wounds, Rulenge hospital's doctor in charge, Sister Maria Goreth Fredricks, told the BBC.
The school is in Kagera region near the border with Burundi.
Our reporter adds that the region is also a transit point for arms and it is not uncommon for residents to come across weapons.
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