Libby Squire search: Police hunt four possible witnesses seen on CCTV

Missing University of Hull student Libby Squire is pictured in Paris in May 2017 during a gap year when she visited with friends

Detectives today urged four possible witnesses who may have 'crucial information' about the disappearance of student Libby Squire to come forward.

The 21-year-old student went missing in the early hours of February 1 after a night out - and a huge search operation in Hull has failed to find any trace of her.

Now, Humberside Police believe the four men - who were in the area of the city where she was last seen - 'may have seen or heard something that could be vital'.

CCTV footage shows four people on Oak Road near the junction with Clough Road, close to where Miss Squire was last seen, between 1.13am and 2.34am on the morning she vanished.

The Oak Road playing fields have become a focal point in the search for Miss Squire over the past three weeks. 

This afternoon, Detective Superintendent Martin Smalley said: 'These four people are potentially witnesses who we need to identify and speak to as part of the investigation.

'While the footage isn't clear enough for anyone to recognise who they may be, the four people in the clips will know if they were in that area at the times given.'

He urged the four people to identify themselves to police, saying they seem to have been travelling in the direction of land that has been widely searched by officers.

One of the people featured in Humberside Police's CCTV footage of four witnesses, who they believe 'may have seen or heard something that could be vital'

One of the people featured in Humberside Police's CCTV footage of four witnesses, who they believe 'may have seen or heard something that could be vital'

Police search Oak Road playing fields in Hull last Tuedsay as part of their investigation

Police search Oak Road playing fields in Hull last Tuedsay as part of their investigation

The first clip shows an individual, believed to be in a light coloured T-shirt and dark trousers, at first running into view on Oak Road and then walking away at 1.13am.

The second clip shows a figure on a bike cycling along Oak Road towards Clough Road at 1.24am, and is then seen cycling back up Oak Road at 1.34am.

The third clip shows two people, one who appears to be dressed all in dark clothing and the second in light coloured trousers and a dark top, on Oak Road at 2.34am.

Oak Road playing fields have been a regular site for searches for Miss Squire, and police returned to the site today with a regional marine unit to examine the drains. 

According to passers-by in the area, officers were 'pumping drains out' with search teams also seen clearing out the drains which are surrounded by discarded litter. 

Search teams have trawled through the park with wooden sticks to scour the landscape with divers are also seen

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