A man is in a critical condition in hospital after he was attacked in the centre of Grimsby.
The 38-year-old was assaulted after he was involved in an argument with another man in St James Square at about 1500 BST on Monday.
The victim was taken to Diana Princess of Wales Hospital, where police said he would have to undergo surgery.
A 38-year-old man was arrested and is in custody. Police urged witnesses to the incident to come forward.