Revellers were evacuated after a deliberate fire was started in a nightclub in Butlin’s in Bognor Regis.
The alarm was raised about 1.45am today (Monday, June 25).
Firefighters, including two wearing breathing apparatus, tackled the small blaze in the club’s female toilets.
There have been no reports of any casualties.
A spokeswoman for West Sussex Fire and Rescue said the fire was started deliberately, but it has not yet been revealed how much damage was caused.