The incident took place outside Sidra Jewellers on Duckworth Lane in Bradford at around 3.12pm on August 11. What police could sayA West Yorkshire Police spokesperson said: "Officers were called by the ambulance services to reports of an assault on Duckworth Lane, Bradford at around 3.12pm yesterday (11 August). "The assault is believed to be part of a robbery by four men outside Sidra Jewellers. "The victim, a man aged 50, has been taken to hospital to be treated for his injuries. "Anyone with information is asked to contact police via online reporting at https://www.westyorkshire.police.uk/LiveChat quoting reference 13260457287."