A 13-year-old boy has been locked up for the killing of Marcia Gray (Picture: PA)

A 13-year-old boy who ran over and killed 60-year-old grandmother Marcia Grant with her own car has been sentenced to two years in custody.

The boy received his sentence at Sheffield Crown Court today after a judge found him guilty of causing her death by dangerous driving.

Mrs Justice May, presiding, heard how the boy ran over Marcia Grant outside her Sheffield home despite the frantic attempts of her husband, Delroy, to stop him.

The judge told the boy: ‘You made a bad choice. You knew that taking her car was wrong. You knew that taking her kitchen knife was wrong.’

She said: ‘The offence you committed was serious but it was not murder.’

‘The prosecution have accepted that you did not mean to harm Mrs Grant,’ she added.

The judge said it was a ‘very bad accident’.

Mrs Grant was a committed foster carer, who was described as the ‘shining lodestar’ of her family.

Her family released a statement after her death which said: ‘Marcia was a warm, loving and dedicated wife, mother, grandmother, sister and friend and a pillar of her community.’

During a previous court appearance, prosecutor Gary Crothers told Sheffield Youth Court that police at the scene noted that the boy said ‘Is she dead?’, ‘Looks like I got my first kill?’, and ‘It was an accident, I swear.’

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The unnamed boy was found guilty of dangerous driving.