The Malta Environment and Planning Authority has urged the police to conduct a criminal investigation after engine oil defaced part of the fortifications along Marsamxett Road in Valletta.
Mepa said the used engine oil was probably dumped in the water run-off gutter on the bastion. It made its way through a spout or a fissure in the parapet and cascaded down the bastion to the street below.
"According to experts in restoration it will not be easy to remove this
scar. This vandal attack comes at
a time when the central government has just acquired millions of euros to
restore the 27 kilometers of fortifications around the Maltese Islands" the authority said.