Police have released an image of a man they want to speak to about a serious assault at a pub in Chesterfield.
The man pictured, who was wearing a distinctive jumper, may have information which could help officers' inquiries.
The incident happened at around 11.45pm on Saturday 1 February. A 45-year-old man was punched in the face at The Sun Inn, West Bars.
He suffered a broken jaw.
If you recognise the man in the picture, contact police using the below methods with reference 20*61717:
• Facebook – send a private message to /DerbyshireConstabulary
• Twitter – direct message the contact centre on @DerPolContact
• Website – complete the online contact form www.derbyshire.police.uk/Contact-Us.
• Phone – call 101.
You can also call Crimestoppers anonymously on 0800 555 111.