The public are being warned not to approach this man who is wanted in connection with an assault on a woman in Milton Keynes.
In the early hours of Tuesday the victim sustained a number of puncture wounds and cuts during the incident.
She was treated at Milton Keynes General Hospital and has since been discharged.
David Dundas, 36, also known as Tyson, is black, 5ft 9ins, stocky, with brown eyes, black hair, pierced ears and a scar on his right arm.
He speaks with a London accent and has connections to the Conniburrow area of Milton Keynes and the Lambeth area in London.
Investigating officer, Det Con Michele Weston said: “If you have any information regarding David Dundas’s whereabouts, please contact the Force via the Thames Valley Police Enquiry Centre on 101.
“Further, if you see David Dundas please do not approach him, instead call police.
“We are liaising with our colleagues in the Metropolitan Police Service to try and locate him as soon as possible.
“If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
“No personal details are taken, information is not traced or recorded and you will not go to court.”