Police are appealing for information after two men were attacked in Stourbridge.
The men, both aged 23, were assaulted at around 10.30pm on Saturday, October 17.
It happened on Hagley Road, close to The Crabmill Pub. The men suffered head injuries and fractures that left one of them needing surgery to insert metal plates and fix the damage.
West Midlands Police said a group of eight teenagers – four boys and four girls – could have information about the attack.
They were all aged around 18 or 19. One was described as a white man wearing dark clothing and a gold neck chain.
Ppolice said they ran off in the direction of Pedmore Road.
CCTV images have been released of some of the group.
Anyone with information should contact police via Live Chat at www.west-midlands.police.uk from 8am to midnight, or call 101 anytime. To remain 100 per cent anonymous, call Crimestoppers on 0800 555 111, quoting crime reference number 20DY/258072Z/20.