Mercer Island city staff have been investigating a concerning case of potential landscape sabotage after observing significant failures in new plantings and an existing tree at a city-owned property. The investigation began when city officials noted the unusual decline of the landscaping, despite proper maintenance. Soil tests subsequently identified high levels of herbicides, which were not part of the planned landscaping project. The concentrated application of these herbicides suggests possible intentional vandalism, which, if confirmed, could result in felony charges. The property has been closed off to the public while remediation efforts are underway.

The Mercer Island Police Department has been notified and is actively investigating the matter. Residents who may have insights or information regarding the incident are urged to contact the police non-emergency line. This case highlights the importance of community vigilance in protecting public spaces.