Three drones have been seized for breaching the no-flight zone which is force across a large swathe of Preston.
Preston Police put the restrictions in place due to the BBC Radio 2 In The Park festival in Moor Park.
The park itself has a tightly controlled airspace zone – as filming is taking place for the TV coverage of the festival.
Read more: See all the latest BBC Radio 2 In The Park news and information
Preston Police released a statement during Saturday about nuisance drones.
A spokesperson said: “People of Preston, you are doing our city proud at Radio 2 In The Park Festival in Moor Park by showing the nation what a fun loving bunch we are.
“Unfortunately a small number of people have ignored the no fly zone and we have had to seize three drones.”
The airspace restriction remains in force until 11.59pm on Sunday (8 September).
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