This is the Guardian.

Today, why are so many asylum-seeking children going missing in the UK?

And what's happening to them?

Mark Townsend has spent months investigating the disappearance of children from the streets.

On the first day of April, 17-year-old Wasim Hassan disappeared from the centre of Hull.

Broad daylight, it was never seen again. Days later, another teenager,

Burian Markudge, 16, vanished nearby. I was later, a 15-year-old was also reported missing.

Four days after that, Al van Baricia, 17-year-old whose portrait suggests a pen-set,

wary character, he suddenly vanished. The same day, a five-foot, five-inch 17-year-old,

Khalid Muha, was last seen wearing a black bomber jacket and white trainers.

We've changed their names to protect their identities, but there are hundreds like them,

alone, and in danger, disappearing into the criminal underworld.

The gangs know where to come to get the children, often likely because they traffic them here in the first place.

There is a criminal network involved, and the government is completely failing to stop them.

These young, vulnerable migrants were supposed to be under the care of the home office.

Instead, child protection experts say that they're being preyed on by human traffickers,

and not enough is being done about it.

I mean, if we don't know where they are, they could be dead.

They could be working away in a cannabis farm, in a factory, domestic servitude.

They could be being criminally exploited or sexually exploited.

This is a total dereliction of duty that is putting children at risk.

We need an urgent and serious action to crack down on these gangs and to keep children and young people safe.

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