Emergency services descended on Bradford city centre in large numbers today.
A big cordon was put in place in City Park, stretching across the front of Bradford Magistrates' Court towards the corner of City Hall.
There was also a cordon in place on Market Street, with at least five police cars and numerous paramedics on the scene.
There are reports that a male had been seen bleeding heavily at around 4.30pm. Blood could also be seen on the paving at the point where Market Street meets Hustlergate.
Paramedics appeared to be helping a person near one of the entrances to the Wool Exchange.
It is not clear if the two police scenes are linked.
A large number of passers-by - including shoppers - gathered as the emergency services dealt with the incident.
One onlooker said it seemed unusual to see a cordon as large as the one in City Park.
Police are yet to issue a statement on the West Yorkshire Police news page.
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