A man was found with serious neck and leg injuries in Wakefield city centre.
Emergency services were called to Quebec Street just before 1pm today (Tuesday).
A man, believed to be in his 40s, was taken to hospital for treatment to his serious injuries.
Officers are still at the scene and a road closure remains in place at the junction of Westgate and Quebec Street.
Investigations are underway to determine how the man became injured.
Anyone with any information about the incident should contact Wakefield CID on 101.