Increased policing for York race meeting
There will be an increased police presence in York due to the large crowds expected for the city's biggest race meeting of the year.
Up to 40,000 people are expected to attend the annual John Smith's Cup meeting later.
North Yorkshire Police said it was doubling the number of officers it usually used to police race meetings.
The force said the additional officers would be sufficient to deal with anti-social behaviour and drunkenness.
It added it had also drafted in mounted officers from West Yorkshire to undertake patrols.
Acting Supt Phil Kane said: "It is a category C meeting for the races that is the highest category we put in place for public events. For tactical reasons I wouldn't divulge the number of officers but it will be sufficient to deal with the crowd size expected."
He said the operation would also ensure the minimum disruption for residents living near the racecourse as race-goers left the meeting.