THE latest destruction of trees at Boonerah Point on Lake Illawarra is currently under investigation by Shellharbour Council officers.
Several trees have been cut down at the site near where 15 trees were found poisoned in July.
"Our level of investigation will now be increased at this site to uncover those responsible for destroying this natural habitat," council's group manager city development Grant Meredith said.
"We are taking this matter very seriously and will be using whatever means possible to identify the culprit."
During the past three years hundreds of trees have been poisoned or removed along the lake, south of Boonerah Point.
Last month, council staff also identified several mangroves that have been poisoned on the mudflats near the point.
Council will also be moving towards conducting formal interviews to unveil any information.
"This criminal act not only impacts on the local environment but also has a financial impact on council resources as we work to resolve the matter and remediate the site," Mr Meredith said.
"We invite any residents who may have any information about the destruction of trees to contact council."
The offence attracts a minimum fine of $1500 per tree or up to $1.1 million if the matter is taken to court.