Police are appealing for the victim of an attack in Lincoln city centre on Sunday to come forward.
The video below was captured by a reader who witnessed a man being punched and dragged on Broadgate in Lincoln by three other men.
The incident happened just after 2pm, and despite the victim screaming and gesticulating towards drivers, nobody stopped or intervened.
Lincolnshire Police said in a statement: “Enquiries have failed to identify the victim or the suspects, and the victim has not come forward to report the incident. If anyone has any information, please contact us on 101 regarding incident 208 of February 12.”