10-year-old Jack Fletcher, who has gone missing with his 12-year-old daughter, has been described by police as:
- 5ft tall, blonde straight hair
- Half-inch scar on his forehead
- Believed to be wearing a black hooded Benzini jacket with bright yellow lettering
- Black ankle boots and a cap with NY on the front
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Paramedics attended a scene in Willesden, north-west London, on Monday afternoon where they found the teenager with stab wounds.
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A Met Office warning covering much of England and south-east Wales is expected to remain in place until 11am.