Police made a further arrest in connection with the investigation overnight. Six people have now been arrested in total.
Detective Superintendent Wayne Fox, who is leading the investigation, said: “A scene will remain in place at Millgate over the coming days.
“I would urge anyone who has any information in relation to this incident to contact us by submitting information online at https:///www.mipp.police.uk/ Please click on the North Yorkshire Police crest.
Alternatively, please contact us on 101 and quote reference number 12220049571 or contact Crimestoppers anonymously on 0800 555 111.