Investigations are being carried out to find why a seafront sculpture is cracking up.

People are being asked to keep clear of Passcaglia, the large curved iron artwork between the piers on Brighton beach.

Tape and a warning sign have been placed on the work, which will have to be dismantled so a damaged plate measuring more than 1sqm can be replaced.

Paula Murray, project manager for Brighton and Hove City Council project manager said: "At the moment it is not clear why this has happened.

"We will look at whether this section might need strengthening when a new piece is cast.

"The sculpture is unique and one of the city's most photographed landmarks so it is important it remains and is maintained."

The National Lottery-funded work by Charles Hadcock was installed in 1998.