Paint colours were splashed across a wall art by South African artist Clifford Charles at the Aspinwall House, the main venue for the Bienalle on Tuesday, the organisers said in a statement.
"In the broad day light on Tuesday, one person in his green T-shirt and bermuda was spotted trying to pour paint on Clifford's artistic work. When some onlookers tried to stop him, he fled from the spot," they said.
An attempt was also made to deface a sketch by Australian artist Daniel Connell
