Updated on 20/3/17 at 2:20 p.m.
Incident number: 644 of 18 March
Officers are continuing to investigate after a man was discovered with serious head injuries.
Police were called by the ambulance service to West Street, Leicester, at 8.25pm on Saturday 18 March.
The man was taken to the Queens Medical Centre where he remains in a critical condition.
Enquiries are still being made to establish how the man sustained his injuries.
Anyone with any information can call 101, quoting incident 644 of 18 March.