A Form Two student at Iruma Day Secondary School in Tharaka Nithi County  has been arrested allegedly killing his 81-year-old grandmother.

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The student is said to have committed the offence on Tuesday.

The student was left under the care of his grandmother Joyce Igoji, who was also paying for his education after the boy’s mother died.

Titus Kaburia, a local leader stated that the accused burnt down a house in his grandmother’s homestead a week ago. Ge was arrested but later released under unclear cirmstances.

 Maara OCPD Johnstone Kabusia said the boy had been arrested as investigations into the killing of the granny continues.

The body of the deceased, which was taken to Chuka Hospital Mortuary, had two visible injuries, one on the forehead and another around the mouth.