Kiambu-based detectives are investigating a bizarre incident in which a form one student killed her three siblings and a cousin within a year.

This comes after the minor confessed to the killings at the Kikuyu Police Station and detailed how she killed her siblings aged seven years, five years and fifteen months.

The minor also confessed to killing her twenty-month-old cousin by drowning him in a well within their compound at Gathia Village in Kabete Sub-county.

The girl’s father walked into Kikuyu police station on Saturday and filed a report against his daughter whom he accused of killing his other children.

The minor admitted to committing the murders before Kikuyu Sub-county children’s officer.

She is currently being held in custody at Kikuyu Police Station as the detectives process her for arraignment in court.