A double murder investigation has been launched after a man and a teenager were stabbed to death in London.

Emergency services were called at 11.33pm on Thursday to Elthorne Road, Islington, north London, after a boy was found with stab wounds.

The teenager, believed to be 15, was pronounced dead at the scene.

Another man, aged 23, had also suffered stab injuries and was pronounced dead after being taken to a west London hospital.

A third person, believed to be aged 28, was then found with a stab wound in a north London house.

He was taken to hospital where he remains in a non-life threatening condition.

No arrests have been made yet.

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The Metropolitan Police’s Specialist Crime Command have launched an investigation and an extensive crime scene is in place and urgent enquiries are ongoing.

Police believe a large number of people were present when the attack took place and are urging witnesses and those with information to come forward.

Chief Superintendent Andy Carter said: “My thoughts are with the families of the two victims who have suffered such an unimaginable loss in this shocking and unacceptable incident.

“A man and boy have lost their lives and we must now work together to identify those responsible and remove them from our streets.”