Boy detained for murdering Edinburgh woman with ‘Rambo’ knife

The court heard last month how the teenager initially believed he had been “set up” to be attacked that night.

But there was no evidence to suggest Ms Davidson was involved in this or aware there would be any assault on the boy.

Iain McSporran KC, defending, said the mother had “lost her life in an utterly senseless attack”.

He added: “She was an entirely innocent victim in this dreadful crime.”

The court heard how the teenager had faced a number of charges throughout the years including fire-raising, drugs, serious assault and vandalism.

These had all been referred to the children’s reporter to be dealt with.

He had been made subject of a compulsory supervision order eight days before the murder.

Judge Lord Arthurson told the teenager: “This was an appalling and cowardly attack on a vulnerable and defenceless young mother in a public street in broad daylight in full public view of witnesses.

“You, having inflicted devastating wounds on the victim, sought to escape leaving her dying on the roadway.

“She was tragically in the wrong place at the wrong time – in close proximity to you while you were intoxicated by drugs and armed with a large, lethal bladed weapon.”

Lord Arthurson ordered him to be detained in a secure unit without limit of time.