Sniffer dogs have been spotted in Haydon End as police step up their search for evidence.

Officers have been spotted searching the grounds of Mazurek Way and Torun Way as the investigation continues into the alleged murder of Owen Dunn.

The 18-year-old was fatally stabbed on the afternoon of Sunday, December 4 at around 1.30pm.

Both a 20-year-old and a 14-year-old had been arrested on suspicion of murder, but the former has now been released under investigation.

Detectives continue to question the 14-year-old.

On Tuesday afternoon sniffer dogs were spotted at the scene, along with police walking with markers.

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This is the procedure that is used to find evidence that could be in the ground.

Earlier on Tuesday, Wiltshire Police issued the following statement.

A spokesperson said: “We are continuing to question a 14-year-old boy on suspicion of murder after a fatal stabbing in north Swindon on Sunday.

“Officers responded to reports of a stabbing on Mazurek Way, Haydon End around 1.30pm in which an 18-year-old man from the town died.

“A 20-year-old man, also arrested on suspicion of murder shortly afterwards, has now been released under investigation.

“The victim's next of kin have been informed although formal identification has not yet taken place.”

Detective Chief Inspector Phil Walker, of the Murder Crime Investigation Team said: “This is a fast-paced investigation, and we are exploring many lines of enquiries.

"We recognise this will have had a huge impact on the local community and we are heartened by the large number of people who are coming forward with information to help with our enquiries.

"Please do get in touch, even the most seemingly insignificant piece of information can sometimes be a vital element in our investigation.”

If you have more information, you can contact the police on 101, quoting Operation Glendale, or anonymously with CrimeStoppers on 0800 555 111.

The death of Owen has sent shockwaves through the Haydon End community.

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During Tuesday afternoon, residents were spotted laying flowers and flags in tribute to the teenager.

Wiltshire’s Police and Crime Commissioner Phillip Wilkinson has pledged to do more to prevent knife crime and ensure more officers are out and about on the frontline.

He said: “What is the behavioural drive and social conditions that cause young people to think this is a clever, tough thing, and feel it necessary to behave this way?

“We really don’t know. That worries me and that’s what we have to get involved in – not just the police but the council and all the other very worthwhile charities and organisations.”