Butlins guests have been rushed out of one of the holiday parks as Royal Navy bomb squads deal with a suspicious package.
The Butlin's resort in Bognor Regis was evacuated at 7.15am on Tuesday morning after concerns about the object were first raised.
Bomb squad members wearing heavy duty Explosive Ordnance Disposal suits were seen marching towards the entrance of the holiday park as guests waited outside.
Numerous police officers stood by as the Royal Navy technicians got to work.
A "small controlled explosion" reportedly took place at around 10.20am.
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A police cordon has also been put in place while they deal with the issue, Sussex Live reported.
Explosive ordnance disposal units were also at the scene investigating the device.
A spokesperson for Sussex Police said: "Police have responded to a report of a suspicious device found in the car park of Butlins, Bognor Regis, at about 7.15am on Tuesday October 5.
"Officers are at the scene assisting an evacuation of guests at the hotel as a precautionary measure and a cordon has been put in place.

"Explosive Ordnance Disposal unit are also at the scene investigating the device."
One guest wrote online: "Been kicked out of Butlins due to a bomb threat. Is it a sign?"
Butlin's reopened all three of its UK resorts on May 17, after months of enforced closures due to the coronavirus lockdown.
It has proved a big pull this summer, with many Brits desperate to getaway after a long period of restricted movement and with travelling abroad difficult during the pandemic.
A Butlin’s spokesperson said: “We worked closely with the emergency services and would like to thank them for their support. The safety and security of our guests and team members is our number one priority and we thank everyone for their patience this morning.”