Two suspects are caught on CCTV laughing and making stabbing motions as they appear to be celebrating knifing two men in the street.
Two men, both aged 24, were attacked in the early hours of Sunday in Lower Parliament Street, Nottingham.
Moments after the brutal stabbing, two men were captured on camera jumping and celebrating as they sprint away from the scene.
One of the suspects is even seen appearing to mime stabbing someone before doing a fist-bump with his pal before they bound away.
The victims were both rushed to hospital after the attack 3.51am but were released later after being treated for stab wounds.
Detective Sergeant Jon Kerry, of Nottinghamshire Police, said: “We are appealing for these men to come forward, or anyone who recognises them, as they may have information that could help the enquiry.
“The images are very clear so I am sure someone will know who they are.
“I would also appeal for anyone who was in the area at the time and saw anything to come forward.
“We know a large number of people were in the area at the time and haven’t come forward so I would urge them to call 101 too.”