AD's Attard councillor Ralph Cassar has condemned the vandalism of around 15 trees in Wied ta' Rmiedi this week.
He said it was clear that the vandals knew what they were doing because they ringed the main trunk of the trees, an operation that would lead to their destruction.
"A 20-year effort to plan indigenous trees and improve the natural environment has been destroyed in a matter of hours," he said.
He appealed to anyone who might have information to speak up and requested the council to file an official police report.