Sheffield Batman and Joker stills released after men violently assaulted

Police in Sheffield have released stills of two people they wish to identify as part of their ongoing investigation into the assault of a group of men in the city centre.
Shortly after 3am on Sunday 30 October, it is reported that three men left Stein Haus, previously BierKeller, on West Street before turning onto Bailey Lane.
It is understood that the group were followed onto Bailey Lane by a man wearing a Batman t-shirt and a woman dressed as the Joker, before the men were violently assaulted in an unprovoked attack.
One of the victims, an 18-year-old man, suffered serious facial injuries that require ongoing hospital treatment.
Another victim, also an 18-year-old man, suffered a slash wound to his hip, suggesting that a knife was used during the assault.
Any information that could help officers locate the suspects can be submitted on their webchat or online portal here, or by calling 101 quoting crime number 14/195350/22.
Alternatively, information can be provided to independent charity Crimestoppers anonymously via their website – www.crimestoppers-uk.org – or by calling their UK Contact Centre on 0800 555 111.