We want to speak to him after an assault where a 19-year-old man was attacked in his Blackburn home in March. Monaghan (pictured below) is also suspected of breaching a non-molestation order.
Sgt Duncan Hall from Blackburn Police said: “We urgently need to trace Monaghan and so I am urging anyone who has seen him or knows where he is to make contact with us as soon as possible. My advice is not to approach him but to call the police instead.
“I would also urge Monaghan himself to do the right thing and hand himself in at the nearest police station.”
He is described as white, around 5ft 5ins .and of stocky build
Aside from Blackburn, he is known to have links to Glasgow, Exeter and Leeds.
Anyone with information is asked to call us on 101.